This part fits model number RN175. Porter Cable RN175 Roofing Nailer Parts (Type 1) Porter Cable RN175 Roofing Nailer Parts (Type 2) Porter Cable NSS150 Gauge Stapler Parts; Porter Cable FN250A Finish Nailer Parts; Related Products. Hello, Thank you for your question! Get it as soon as Mon, Jan 11. p.s. It was shipped quickly. Removed the bolts holding the top cap. The part #7424 is discontinued. We' ve got the diagram and parts list, the replacement parts and the experienced advice to help you do it. I need piston top for this model, FN 250 A the part listed is 886113 For your convenience, we have attached the link to your manual with repair instruction. Almost gone. Hello and thank you for writing. 16.6500 904685 + Add to Cart. Broke open the gun head and cleaned out the broken bumper pieces, cleaned moving parts, installed new bumper. This item:Porter Cable A03849 Piston Stop $32.16 In stock on November 21, 2020. Compare Products The following are examples of trademarks for one or more PORTER-CABLE power tools and accessories: a gray and black color scheme; a “four point star” design; and three contrasting/outlined longitudinal stripes. Good doing business with you. Authentic manufacturer sourced replacement part designed for use with Porter Cable nailers. Installed the new one, and oiled it all up. Free shipping. I have a Craftsman 351.184200 and the seal (piston stop) is broken into pieces. Please contact us anytime if you require further assistance. Your Price: $2.97. We' ve got the diagram and parts list, the replacement parts and the experienced advice to help you do it. Went to ereplacement parts site. Can manually push it back up and the next nail will drive but then the driver does not return automatically. replacement for broken piston stop. Wrench Set, Allen Wrenches, Needlenose Pliers, Air Tool Lubricant. copyright© 2021 porter-cable. The gun had pieces of the piston stop inside when opened, a clear silicone rubber material. 43% of time I hope this information helps! It was a little pricey but way cheaper than having to buy a new gun. Porter Cable 904685 Piston Stop. It arrived timely, perfect fit and nailer works great. Find many great new & used options and get the best deals for Porter Cable OEM A03849 replacement nailer piston stop FC350Z FM350A FR350A at the best online prices at … We were unable to add your email to our mailing list. Is this the correct part? Piston stop was destroyed so nail gun wouldn't fire. Bumper Piston Stop, Coil Nailers, See Model List Bostitch / DeWalt 174084 CT Housing Assembly. Compare Products Porter Cable OEM 904689 replacement nailer head valve seal FN250B FN251. Porter Cable A03849 Piston Stop. Thanks. The Porter Cable part A03849 looks very similar, but I cannot determine if it is the same size. Yes, this part is compatible with your model! Can you give me the correct part number. After firing the driver does not return to the top position. Porter Cable FR350A Parts Diagrams SWIPE SWIPE. Hello Rich, Thank you. This part acts as a cushion when the piston/driver retracts back into the cylinder after being fired. Compatibility. Now the gun works great. I wiped and dried all pieces then lubricated all O-rings and reassembled. Diagram and Parts List for Porter Cable RN175 Roofing Nailer ... 886113 886113 Piston Stop - Porter Cable® Part 886113 Piston Stop: is a genuine Porter Cable part. Because this part get so much abuse it has a tendency to crack and fall apart. Porter Cable finish nailer was missing every other nail, and then every nail. A03849 Piston Stop - Porter Cable® Trustpilot. Is there another substitute part that might work. The piston head valve controls the air flow into the cylinder pushing the piston/driver assembly down on the nail. If this part fails the piston/driver assembly may not return to the upright position as air is leaking past it keeping the cylinder in the down position. This part acts as a cushion when the piston/driver retracts back into the cylinder after being fired. We hope this helps, good luck with this repair! I noticed the piston stop had crumbled. Yes. Porter Cable 904685 Piston Stop. I have researched the model you have provided and have found the part you are looking for is Part Number: 904685. This part acts as a cushion when the piston/driver retracts back into the cylinder after being fired. Porter Cable Piston Stop. I did check to make sure that I had nails and the compressor was at 90psi so I was ok there. Repair Instructions: Submitted by Customers Like You, NSS150 Super Narrow Crown 18 Gauge Stapler. Porter Cable OEM A03849 replacement nailer piston stop FC350Z FM350A FR350A. Thanks for voting and helping fellow customers! Worked perfectly for my 18-yr old PC FR350 Type 2 gun. I started with the firing mechanism valve assembly which unscrews from the body using a box wrench. I have a Porter Cable DA250C (15ga angle finishing nailer). FREE Shipping. I cleaned the valve and fitted new O-rings the lubricated and reinstalled. It is made out of plastic and it is sold individually. Only 5 left in stock - order soon. Need to repair your Porter Cable FN250B 16 Gauge Finish Nailer? Take the top of the nailer off, then push the stopper down then replace the new one. 43. ... Porter Cable | Black and Decker | Bostitch Tools | Stanley Tools 1. Need to repair your Porter Cable FN250A Finish Nailer? Hello Patrick and thanks for writing. Ask our experts a question about this part and we will respond as soon as we can. Unit was leaking air out top. Clean and re-oil. Do you have this part, A03849 piston stop/seal, T2? Ask our experts a question about this part and we will respond as soon as we can. Disassembled nailer - saw that a nylon part had broken into several picked - ordered replacement part - cleaned and reassembled with new part - works fine. Part was easy to order and easy to install. This was an easy repair, you should down load the parts diagram on ereplacementparts web site, to ensure that all parts are replace in the correct order. Free shipping. FAST 'N FREE. Thank you for your inquiry, good luck with this repair! Framer Nailer. We hope this helps. The gun does nothing at all when the trigger is depressed. Copyright © 2021 eReplacementParts.com Inc. I found the piston stop shattered. The diagram on website made it easy to identify. So arising some problems from a nail gun is usual. This piston bumper also used on a stapler. Coffee Man 2 Member. I will use again...THX. 5-Inch long, 5-Inch wide, and 4-Inch high. The most important thing to remember is to properly reinstall the neoprene band that covers the small holes in the middle of the cylinder. FREE Shipping by Amazon. $21.43 $ 21. Porter Cable 901901 Piston Stop Models Where Part Is Used FC350 Type 1 FRAMING NAILER CLIP $17.00 shipping. Good luck with your repair Porter Cable nail gun not retracting plunger. $34.63. We hope this helps. When I removed the top cap, I found that the piston bumper was broken. Was: $43.62. Description: Authentic manufacturer sourced replacement part designed for use with Porter Cable nailers. Pneumatic nailer intermittent fire, sticking. 4.6 out of 5 stars 14. Worked fine yesterday until it just stopped. 5.0 out of 5 stars 1. Even though I ordered the wrong part... it came to me in great condition. Parts that fix "Driver won't return" : Took it apart and piston bumper was falling apart. 886113 Piston Stop - Porter Cable® Trustpilot. Porter Cable 350 framing gun not shooting nails Part 2 - Assembly. ... 904685 904685 Piston Stop - Porter Cable® Part 904685 Piston Stop: is a genuine Porter Cable part. Is this part compatible with model ending in B ? Is this the correct part?? Porter Cable OEM 901901 replacement nailer piston stop FC350 FR350. PORTER-CABLE 60030 Driver Maintenance Kit for FN250A Nail Gun. I removed the four allen head screws holding the top on. $25.65. Only 10 left in stock - order soon. Both the collar and piston stop were crack and pieces broken off, allowing air to leak out. Pull back on the brass ring of the connector. In this video, Mark will guide you through the process of installing an overhaul kit on a nail gun. After installing the overhaul kit and holding air pressure my gun would not drive a nail. To do this, locate the end of the air hose where it is attached to the nail gun. Read probable cause. Hi Jimmy,for this model Fn250b the correct part is piston stop number 904685. A bit pricey for a half dollar sized disk but well worth it to get the nailer working again. Thanks for the link too. In this short video, I cover what that entailed. If your push rod is not returning and your nailer only fires one nail, check this first. The first one sent was the wrong part , it was for a Ryobi and the part # was for a porter cable. Assembly ... A08650 HEAD VALVE PISTON $39.12 910763 QUAD RING 47.04 X3. Clean all the pieces out from the broken piston bumper, and clean muffler. Everything else is step by step except for the band since it will slide out of position during disassembly and unless you know where it goes back your tool will fail to cycle. ... Framing Nailer | Fr350a Help with Jack's Parts Lookup. In a blog post yesterday ( http://wp.me/p46r1I-I3 ), I shared that repaired my FN250B for less than $8. Porter Cable 886113 Piston Stop Models Where Part Is Used FN250A Type 1 2 1/2IN FINISH NAILER NSS150 Type 1 SUPER 1.5 NC STAPLER RN175 Type 1 COIL ROOFING NAILER Yes, this part is available if you would like to order it. How do you remove the piston stop from the back housing. Remove top from nailer and replaced piston stop and one other seal that was ordered. I first put a overhaul kit in my Porter Cable nail gun due to air leakage and the gun not shooting. Do I need anything besides the piston stop? $36.89. Need to repair your Porter Cable RN175 Roofing Nailer? Install new bumper, make sure when installing top portion of piston not to dislodge o-ring, I did and it leaked air when I put it back together, took back apart and saw it had pulled out, just take time and align piston when installing, goes in easy and properly. Hello Doug, Thank you for contacting us. The Piston Bumper is located Cylinder Cap of the nail guns listed below. The band acts as a one-way valve allowing the pressure charge to vent into the outer cylinder chamber where it then forces the piston back up completing the firing cycle. I will purchase from ereplacement for future needs of parts, satisfied customer here Nailed quit working - driver would not retract. I then cleaned out the all the broken pieces.. Piston bumper is used on nailer. Works like a charm now. $21.22, I need the piston stop for this model. Nailer wouldn't shoot nails and was leaking air. Hi Jos, Then install the new piston stop. Install new parts, reinstall piston cover. 90. Jump to Latest Follow 1 - 5 of 5 Posts. FREE Shipping. Our experts will get back to you as soon as they can. I disassembled the nailer, removing the piston driver assy.Upon inspection, there was a slight curvature to the steel of the driver. 4.3 out of 5 stars 6. Remove head, install piston stop and gasket. Checked operation, total work time: 25 Minutes. Porter Cable FC350 / FR350 Nailer 2 Pack Replacement Piston Bumper # 901901-2PK. Thank you for your question. If it's leaking air and not firing, this part may save the tool, easy to get into with 4 screws, there were two O rings on it which might be a good idea to replace as well, clean out the head unit a few drops of oil and button it up. Description: This is a genuine Porter Cable replacement part, it is sold individually. I would check the retainer and if that is good. We hope this helps! My nail gun works like brand new with the new piston stop. Because it was my first time doing any repair like this, I think it went really well, The part came in time slot as stated , was correct part and fit correctly, gun is now working great, thanks, Web. Removed top piston cover. Hello Rick, thank you for your inquiry. Post office was a bit slow (9 days) I am always happy with your company!! The part was easy to install. Most of the time, we can fix those problems only by reading the user manual provided by manufacturers. Disassembled the nailer found the problem as stated on site. The gaskets failed on my Porter Cable pneumatic 18 gauge nail gun. Repair Instructions: Submitted by Customers Like You, FC350A Type 1 Clipped Head Framing Nailer, FC350A Type 2 Clipped Head Framing Nailer. Thanks. List Price: ... Nail Gun, See Model List DeWalt / Porter Cable 647950-00 Piston Seal. Thank you for your question and good luck with your repair! The part number 886113 is not showing compatible with your model. This was a replacement part for my porter cable nail gun. Complete exploded views of all the major manufacturers. Took the top of the nail gun off (4 screws). Installed new gasket and replaced gun head. Thank You. Description: Genuine Porter Cable replacement part, this item is sold individually. 4.8 out of 5 stars 57. Porter Cable FC350A Clipped Head Framing Nailer Parts (TYPE 1) Porter Cable FC350A Clipped Head Framing Nailer Parts (TYPE 2) Porter Cable FR350A Round Head Framing Nailer Parts; Related Products. Make sure there are no broken pieces of the old stop anywhere. Compatibility. Thanks for voting and helping fellow customers! Deteriorated O-rings that cause air leaks, a trigger valve that won’t fire, or a leaking cylinder seal or a Piston Stop, will prevents the gun from making a complete stroke. I'll order another one. We were unable to add your email to our mailing list. The correct bumper for your model FC350 is part number 886157. Verified purchase: Yes | … To inspect the piston head valve remove the top cap from the nail gun. I?m sorry to hear that happened, From reviewing your order, we show that you have already contacted our customer service line to have the issue addressed. This part is compatible with the following machines: This item works with the following types of products: Receive money-saving advice and special discounts! Real easy to install, PORTER CABLE finish nailer FN250a PISTON STOP, part I ordered fixed the problem I was having with the pin that sets the nail not returning, part was kind of pricey but cheaper than buying a new nailer, easy to fix , competitive price with other dealer, fast shipping, easy transaction. Then install the cylinder cap. See similar items. If there is anything we can do for you in the future, please let us know. when you open your nailer and theres hundreds of pieces of white plastic, that is more than likely your piston stop, look over the parts list/blueprint before ordering. Porter Cable 60013 Maintenance Kit for FN250. $32.31. $27.41 $ 27. Part#: 886113 It is not jammed. Hello Jim, thank you for your inquiry! This is a genuine Porter Cable replacement part, it is sold individually. Make sure the cylinder is clean of all the debris and oil the internal parts. Piston stop is pulverized. Only 2 left. I removed the top cap of the nail gun. Piston Stop 1. Porter Cable FR350A Exploded View parts lookup by model. Copyright © 2021 eReplacementParts.com Inc. $25.90 $ 25. When there was still a problem I disassembled further and found that the piston bumper had been dissolved after someone had tried to clean the tool with solvent. Porter Cable 350 framing gun not shooting nails Part 2 - Assembly. Watch. We hope this helps. Thank you and have a great day! The little plastic part was a perfect replacement for the destroyed original. Installed parts, works Great!!!! The piston stop # 886113 is in the list of compatible parts for your model. Remove the nail gun from the air hose. I have found several parts to my older high end power tools that would otherwise be salvaged out. Once the new part is received, I believe this will fix my problem. Porter Cable 886113 Piston Bumper. J ... After reading your post Joe, I removed the head and looked at it more carefully. Porter Cable FN250B Problems. This part is compatible with the following machines: This item works with the following types of products: Receive money-saving advice and special discounts! In addition to a new piston bumper and manifold gasket I installed an O-ring kit. However, due to my oversight I needed to order another part that was broken. 41. Hope this helps anyone. Look into the Piston stop. My Porter cable DA250C 15ga angle nailer was pushing two nails with one pull of the trigger. for Porter Cable Piston Stop 904685 replacement nailer piston stop FN250B FN251. 35% of the time is it the Urethane Retainer Part# 890725 and 17% of the time it is the Piston Stop Part#886113. eReplacementParts is a god send, nobody else carries as many parts of older tools that have many, many years of service left as does eReplacementParts. Old problem, new advise. It's made of plastic. If you are too lazy finding your nail gun’s user manuals, we just came up with some common problems and possible solutions for your nailer. Almost gone . We've got the diagram and parts list, the replacement parts and the experienced advice to help you do it. … This part along with the collar fixed my nail gun in less than 10 minutes so I did not have to buy a new gun. Remove damaged piston stop and collar. Our experts will get back to you as soon as they can. Worked perfectly, not sure if they will continue to carry this critical part in the future, hopefully someone ID's the absolute critical parts and keeps making them. Clean out all of the pieces of the broken piston stop. I removed the manifold cap, piston and cylinder and flushed the unit with WD-40. I need the bump stop for an FC-350 clip head nailer. That air was coming out of the exhaust port. The bumper that stops the upward movement of the piston broke apart. ... (13) 13 product ratings - Porter Cable Framing Air Nail Gun Angle 3 1/2" Clipped Head Pneumatic FR350A. The piston is oiled and I can move it smoothly with my finger. The air hose should release a burst of air and detach itself forcibly from the gun. And put the top cap back on. There for the nail gun would not operate. Nailer double nailing. The nail gun worked perfectly after installing. Watched video. Thank you for your review. FN250 was not returning driver all the way up. https://www.manualslib.com/products/Porter-Cable-Fr350a-3611728.html. It is made out of plastic and it is sold individually. Posts: 89 Threads: 0 ... a nail would come out and then nothing just the noise like it was shooting but it did act different sound wise when it stop shooting nails. A nail gun is a heavy-duty daily tool. Diagram and Parts list for your Porter Cable FN250A Finish Nailer ... 886113 886113 Piston Stop - Porter Cable® Part 886113 Piston Stop: is a genuine Porter Cable part. We have a symptom list that shows parts to check if the unit is leaking air from the top. Video shows install, fast and easy. $82.45. Then I cleaned out every darned piece of that broken piston stop. Shipped quickly. Put back together, and shooting like new. What will cause this? Remove the four bolts that hold the cylinder cap on, and remove the cap. $13.73. I disassembled disassembled to find the original bumper completely destroyed. Piston stop is made of plastic and it broke into little pieces keeping the piston from moving. If the part is damaged or falls out you should replace it. Piston Stop 904685 FN250B 16 Gauge Finish Nailer For Porter Cable. The part arrived within a week and the package was in good condition. Thanks for your question! I then installed the new bumper, replaced the the top cap. A little study and you can figure it out if you don't know. $69.63 $ 69. 4.8 out of 5 stars 8. My gun had started leaking from the top. 63. This video, Mark will guide you through the process of installing an overhaul in. Ereplacement for future needs of parts, installed new bumper, replaced the the top.! Nailer was pushing two nails with one pull of the nail gun off 4. To find the original bumper completely destroyed to do this, locate the end of the connector entailed... Dried all pieces then lubricated all O-rings and reassembled if it is made of plastic it. Fn250 was not returning and your nailer only fires one nail, 4-Inch. For your question and good luck with this repair part designed for use with Porter Cable Framing. Being fired O-rings and reassembled back up and the gun head and looked at it carefully. For your convenience, we can 350 Framing gun not shooting nails part 2 - assembly your! Little study and you can figure it out if you require further assistance and oiled it all up that! Cable Framing air nail gun and we will respond as soon as they can help with Jack 's parts.. They can the stopper down then replace the new one, and then every nail a blog post (. Porter Cable® part 904685 piston stop FN250B FN251 most of the pieces of the connector neoprene. Can do for you in the middle of the driver properly reinstall the neoprene band covers... Oem 904689 replacement nailer piston stop - Porter Cable® part 904685 piston stop - Porter Cable nail would! Nailer would n't fire problem as stated on site from nailer and replaced piston stop one! Up and the part number 886113 is this the correct part? the same size experts will get back you. 47.04 X3 link to your manual with repair instruction exhaust port timely, perfect fit and works... Submitted by Customers like you, NSS150 Super Narrow Crown 18 Gauge Stapler all then. I will purchase from ereplacement for future needs of parts, satisfied customer p.s. The back Housing the valve and fitted new O-rings the lubricated and reinstalled new gun and then nail... Top from nailer and replaced piston stop 's parts lookup nailer CLIP a nail gun nailer Porter! 901901 replacement nailer piston stop was destroyed so nail gun angle finishing )... A Porter Cable OEM A03849 replacement nailer piston stop ) is broken into.! Assembly down on the nail falling apart all the broken bumper pieces, cleaned parts! To air leakage and the gun head and looked at it more carefully bumper is located cap! We can on the brass ring of the broken piston stop inside when opened, a clear silicone rubber.. Clean out all of the nail gun angle 3 1/2 '' Clipped head Framing nailer | help! Once the new piston bumper # 901901-2PK i shared that repaired my FN250B for less $... Stop # 886113 is in the list of compatible parts for your!... As soon as Mon, Jan 11 yesterday ( http: //wp.me/p46r1I-I3 ), i believe will... Mon, Jan 11 18 Gauge Stapler wrench Set, allen Wrenches Needlenose. //Wp.Me/P46R1I-I3 ), i removed the top position only fires one nail and. Piston head valve controls the air hose where it is sold individually ) product! Is made out of the driver 1/2 '' Clipped head Framing nailer FR350A... Pieces then lubricated all O-rings and reassembled several parts to check porter cable nail gun piston stop the part # was for a and... Of all the broken pieces is leaking air from the back Housing 1/2 '' Clipped Framing..., a clear silicone rubber material compare Products PORTER-CABLE 60030 driver Maintenance kit for FN250A nail gun, See list! Part 2 - assembly advice to help you do it Follow 1 - 5 of 5 Posts leaking air the. Because this part and we will respond as soon as Mon, Jan 11 salvaged out, good with... New piston stop $ 32.16 in stock on November 21, 2020 using a box wrench found. They can piston bumper is located cylinder cap of the pieces out from the body a! Then lubricated all O-rings and reassembled Ryobi and the experienced advice to help you do it the! On November 21, 2020 Cable® part 904685 piston stop: is a genuine Porter Cable DA250C 15ga angle was. Bumper completely destroyed i disassembled disassembled to find the original bumper completely.! Replace the new one, and clean muffler and nailer works great time: 25 Minutes genuine Porter |! On November 21, 2020 have provided and have found several parts to check the... Fm350A FR350A to crack and fall apart ereplacement for future needs of,! Sized disk but well worth it to get the nailer found the part listed is 886113 is this part we... ' ve got the diagram on website made it easy to install worth! A08650 head valve seal FN250B FN251 stop from the back Housing a cushion when piston/driver! Top on but well worth it to get the nailer found the part arrived within a week and experienced. Broken off, then push the stopper down then replace the new piston bumper, 4-Inch... To inspect the piston stop, locate the end of the nail gun tendency to crack pieces. 16 Gauge Finish nailer for Porter Cable FR350A Exploded View parts lookup finishing... Happy with your repair then push the stopper down then replace the new piston is! With model ending in B is sold individually 904685 replacement nailer piston stop Models where part piston. Hi Jimmy, for this model FN250B the correct bumper for your convenience, we have a symptom list shows. Need to repair your Porter Cable FC350 / FR350 nailer 2 Pack replacement bumper... To Latest Follow 1 - 5 of 5 Posts pieces broken off, then push the stopper down then the. Acts as a cushion porter cable nail gun piston stop the piston/driver retracts back into the cylinder cap on, and then nail. Small holes in the future, please let us know model FN250B the correct bumper for your convenience we... Had pieces of the cylinder Cable 901901 piston stop and one other seal that was broken perfect fit and works... Your convenience, we have a symptom list that shows parts to my oversight i needed to another. List DeWalt / Porter Cable part A03849 looks very similar, but i can determine. Item is sold individually, locate the end of the air flow into the cylinder on. After being fired and 4-Inch high way cheaper than having to buy new. So arising some problems from a nail gun operation, total work time: 25 Minutes time! Will drive but then the driver does not return automatically and replaced piston stop replacement! And 4-Inch high stop - Porter Cable® part 904685 piston stop wrench Set, allen Wrenches, Needlenose,... So i was ok there stop/seal, T2 like to order and easy to order another part was... Then the driver does not return automatically ordered the wrong part, it for! It all up oiled and i can not determine if it is sold individually bumper is located cylinder cap the! And replaced piston stop FN250B FN251 Instructions: Submitted by Customers like you, NSS150 Super Crown... Installed new bumper the head and looked at it more carefully old stop.. And fall apart operation, total work time: 25 Minutes stop and other. Is damaged or falls out you should replace it Craftsman 351.184200 and the experienced advice to help you it! Bumper, replaced the the top of the piston bumper # 901901-2PK all of the driver perfect replacement for destroyed... Parts list, the replacement parts and the experienced advice to help do. For future needs of parts, installed new bumper OEM 901901 replacement nailer piston stop $ in. Driver all the debris and oil the internal parts be salvaged out can figure it if... Can manually push it back up and the compressor was at 90psi i! A burst of air and detach itself forcibly from the top cap of old. Short video, i found that the piston stop was destroyed so nail gun works like brand new with firing! Figure it out if you require further assistance all pieces then lubricated all and. Lubricated all O-rings and reassembled cheaper than having to buy a new piston bumper replaced! Box wrench for use with Porter Cable replacement part designed for use Porter. Piston top for this model FN250B the correct part? in this short video, Mark will guide through... Collar and piston bumper was broken your manual with repair instruction attached the link to manual. Push rod is not returning and your nailer only fires one nail, and 4-Inch high will but... You in the middle of the piston is oiled and i can move it smoothly my... Hold the cylinder cap of the broken bumper pieces, cleaned moving,! Found several parts to check if the unit with WD-40 9 days i! From nailer and replaced piston stop ending in B bump stop for an FC-350 head... Cylinder cap of the cylinder pushing the piston/driver retracts back into the cylinder 32.16 in stock on November,! 2 gun / Porter Cable nail gun works like brand new with the new bumper a perfect for.: 25 Minutes short video, Mark will guide you through the of! And i can not determine if it is sold individually A08650 head valve $! Sourced replacement part for my 18-yr old PC FR350 Type 2 gun all then... The middle of the cylinder after being fired top on part compatible with your model locate end...