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| Best Seller  | J P Enterprises 308 Ar Silent Captured Springs Gen 2 - 308 Ar Silent Captured Spring Gen 2 The Gen 2 Drop-in captured-spring recoil system helps your AR function more smoothly and quieter without any permanent modifications. The carefully balanced, custom-ground buffer spring, combined with the JP LMOS buffer, greatly reduces friction and... ... more
J P Enterprises 308 Ar Silent Captured Springs Gen 2 - 308 Ar Silent Captured Spring Gen 2 The Gen 2 Drop-in captured-spring recoil system helps your AR function more smoothly and quieter without any permanent modifications. The carefully balanced, custom-ground buffer spring, combined with the JP LMOS buffer, greatly reduces friction and... | go to store |
 | J P Enterprises 308 Ar Silent Captured Springs Gen 2 - 308 Ar Silent Captured Spring Gen 2 W/ Alt Sp The Gen 2 Drop-in captured-spring recoil system helps your AR function more smoothly and quieter without any permanent modifications. The carefully balanced, custom-ground buffer spring, combined with the JP LMOS buffer, greatly reduces friction and... ... more
J P Enterprises 308 Ar Silent Captured Springs Gen 2 - 308 Ar Silent Captured Spring Gen 2 W/ Alt Sp The Gen 2 Drop-in captured-spring recoil system helps your AR function more smoothly and quieter without any permanent modifications. The carefully balanced, custom-ground buffer spring, combined with the JP LMOS buffer, greatly reduces friction and... | go to store |
| Best Seller  | J P Enterprises Ar-15 Silent Captured Springs Gen 2 H2 - Ar-15 Silent Captured Spring Gen 2 H2 The Gen 2 Drop-in captured-spring recoil system helps your AR function more smoothly and quieter without any permanent modifications. The carefully balanced, custom-ground buffer spring, combined with the JP LMOS buffer, greatly reduces friction and... ... more
J P Enterprises Ar-15 Silent Captured Springs Gen 2 H2 - Ar-15 Silent Captured Spring Gen 2 H2 The Gen 2 Drop-in captured-spring recoil system helps your AR function more smoothly and quieter without any permanent modifications. The carefully balanced, custom-ground buffer spring, combined with the JP LMOS buffer, greatly reduces friction and... | go to store |
 | J P Enterprises Ar-15 Silent Captured Springs Gen 2 - Ar-15 Silent Captured Spring Gen 2 W/Alt Sprin The Gen 2 Drop-in captured-spring recoil system helps your AR function more smoothly and quieter without any permanent modifications. The carefully balanced, custom-ground buffer spring, combined with the JP LMOS buffer, greatly reduces friction and... ... more
J P Enterprises Ar-15 Silent Captured Springs Gen 2 - Ar-15 Silent Captured Spring Gen 2 W/Alt Sprin The Gen 2 Drop-in captured-spring recoil system helps your AR function more smoothly and quieter without any permanent modifications. The carefully balanced, custom-ground buffer spring, combined with the JP LMOS buffer, greatly reduces friction and... | go to store |
 | J P Enterprises Ar-15 Silent Captured Springs Gen 2 For Law Folding Adapter - Ar-15 Scs For Law Fold The Law Tactical Folding Stock Adapter is far and away the most popular and capably designed device of its type. The only missing piece was compatibility with the JP Silent Captured Spring that could meet true duty-level durability and reliability... ... more
J P Enterprises Ar-15 Silent Captured Springs Gen 2 For Law Folding Adapter - Ar-15 Scs For Law Fold The Law Tactical Folding Stock Adapter is far and away the most popular and capably designed device of its type. The only missing piece was compatibility with the JP Silent Captured Spring that could meet true duty-level durability and reliability... | go to store |
 | J P Enterprises Ar-15/M16/308 Ar Tuned Buffer Spring - Tuned And Polished Buffer Spring, 308 Carbine Precision centerless ground and polished operating springs offer a smoother and quieter operation in AR buffer tubes. Improved impulse feel results in faster sight recovery and improved reliability. Outer-diameter is ground and polished for smooth,... ... more
J P Enterprises Ar-15/M16/308 Ar Tuned Buffer Spring - Tuned And Polished Buffer Spring, 308 Carbine Precision centerless ground and polished operating springs offer a smoother and quieter operation in AR buffer tubes. Improved impulse feel results in faster sight recovery and improved reliability. Outer-diameter is ground and polished for smooth,... | go to store |
 | J P Enterprises Ar-15/ 308 Ar Cleaning Rod Guide - Ar-308 Cleaning Rod Guide Blue Replaces the bolt carrier, seals the upper receiver and provides safe and effective cleaning from the breech instead of the muzzle. Solid aluminum rod guide helps prevent throat and chamber damage plus, the rubber "O" rings keep bore cleaning solvents... ... more
J P Enterprises Ar-15/ 308 Ar Cleaning Rod Guide - Ar-308 Cleaning Rod Guide Blue Replaces the bolt carrier, seals the upper receiver and provides safe and effective cleaning from the breech instead of the muzzle. Solid aluminum rod guide helps prevent throat and chamber damage plus, the rubber "O" rings keep bore cleaning solvents... | go to store |
 | J P Enterprises 223/308 Tungsten Weight - Ar-15/M16/Ar-308 Tungsten Weight Designed to replace one or more of the existing weights of the JP Silent Captured Spring, these tungsten weights are heavier than the standard components to allow for more reciprocating mass in the operating system. Compatible with any Gen 1 JP Silent... ... more
J P Enterprises 223/308 Tungsten Weight - Ar-15/M16/Ar-308 Tungsten Weight Designed to replace one or more of the existing weights of the JP Silent Captured Spring, these tungsten weights are heavier than the standard components to allow for more reciprocating mass in the operating system. Compatible with any Gen 1 JP Silent... | go to store |
 | J P Enterprises 308 Ar Mkiii Signature Series Free Float Handguards - 308 Ar 15.5" Mkiii Handguard $20 off $200+. Use code SEPT20With a new enhanced attachment method that combines aesthetic polish and durability, the JP MKIII system accommodates both the stylish, rock-blasted JP Signature tube with its faster rail relocation and new textured finish. Like its predecessors, MK... ... more
J P Enterprises 308 Ar Mkiii Signature Series Free Float Handguards - 308 Ar 15.5" Mkiii Handguard With a new enhanced attachment method that combines aesthetic polish and durability, the JP MKIII system accommodates both the stylish, rock-blasted JP Signature tube with its faster rail relocation and new textured finish. Like its predecessors, MK... | go to store |
 | J P Enterprises Ar-15/M16/308 Ar Tuned Buffer Spring - Tuned Buffer Spring, Rifle Precision centerless ground and polished operating springs offer a smoother and quieter operation in AR buffer tubes. Improved impulse feel results in faster sight recovery and improved reliability. Outer-diameter is ground and polished for smooth,... ... more
J P Enterprises Ar-15/M16/308 Ar Tuned Buffer Spring - Tuned Buffer Spring, Rifle Precision centerless ground and polished operating springs offer a smoother and quieter operation in AR buffer tubes. Improved impulse feel results in faster sight recovery and improved reliability. Outer-diameter is ground and polished for smooth,... | go to store |
 | J P Enterprises Ar-15/M16/308 Ar Tuned Buffer Spring - Tuned Buffer Spring, Carbine Precision centerless ground and polished operating springs offer a smoother and quieter operation in AR buffer tubes. Improved impulse feel results in faster sight recovery and improved reliability. Outer-diameter is ground and polished for smooth,... ... more
J P Enterprises Ar-15/M16/308 Ar Tuned Buffer Spring - Tuned Buffer Spring, Carbine Precision centerless ground and polished operating springs offer a smoother and quieter operation in AR buffer tubes. Improved impulse feel results in faster sight recovery and improved reliability. Outer-diameter is ground and polished for smooth,... | go to store |
 | J P Enterprises Ar .308 .750 Jam Nut 5/8-24" - Ar .308 .750 Jam Nut 5/8-24" Steel Black High quality hex jam nuts for indexing muzzle devices. Available in black or stainless steel for 5/8-24 threads. Mfg: J P Enterprises SPECS: .200 thick. Requires use of thin wrench to tighten against brakes and comps. ... more
J P Enterprises Ar .308 .750 Jam Nut 5/8-24" - Ar .308 .750 Jam Nut 5/8-24" Steel Black High quality hex jam nuts for indexing muzzle devices. Available in black or stainless steel for 5/8-24 threads. Mfg: J P Enterprises SPECS: .200 thick. Requires use of thin wrench to tighten against brakes and comps. | go to store |
 | J P Enterprises Ar .308 .750 Jam Nut 5/8-24" - Ar .308 .750 Jam Nut 5/8-24" Stainless Steel Silver High quality hex jam nuts for indexing muzzle devices. Available in black or stainless steel for 5/8-24 threads. Mfg: J P Enterprises SPECS: .200 thick. Requires use of thin wrench to tighten against brakes and comps. ... more
J P Enterprises Ar .308 .750 Jam Nut 5/8-24" - Ar .308 .750 Jam Nut 5/8-24" Stainless Steel Silver High quality hex jam nuts for indexing muzzle devices. Available in black or stainless steel for 5/8-24 threads. Mfg: J P Enterprises SPECS: .200 thick. Requires use of thin wrench to tighten against brakes and comps. | go to store |
 | J P Enterprises Ar.308 Bolt Carrier - Ar .308 Bolt Carrier, Carrier Only $20 off $200+. Use code SEPT20The JP Enterprises full mass .308 carrier is designed to provide greater reliability in suppressed setups as well as SBRs and rifles without an adjustable gas system. Heavier than a standard DPMS LR-308 carrier, the JPBC-5 allows for the additional... ... more
J P Enterprises Ar.308 Bolt Carrier - Ar .308 Bolt Carrier, Carrier Only The JP Enterprises full mass .308 carrier is designed to provide greater reliability in suppressed setups as well as SBRs and rifles without an adjustable gas system. Heavier than a standard DPMS LR-308 carrier, the JPBC-5 allows for the additional... | go to store |
 | J P Enterprises 9mm Gen 2 Silent Captured Spring System Short Stroke Version - 9mm Gen2 Silent Captu The 9mm Silent Captured Spring is a drop-in component that softens recoil and reduces cycling noise and vibration in your 9mm carbine. The result is a refined rifle that's a pleasure to shoot. Paired with our 9mm bolt assembly, you have the most... ... more
J P Enterprises 9mm Gen 2 Silent Captured Spring System Short Stroke Version - 9mm Gen2 Silent Captu The 9mm Silent Captured Spring is a drop-in component that softens recoil and reduces cycling noise and vibration in your 9mm carbine. The result is a refined rifle that's a pleasure to shoot. Paired with our 9mm bolt assembly, you have the most... | go to store |
 | J P Enterprises 9mm Gen 2 Silent Captured Spring System Short Stroke Version - 9mm Gen2 Silent Captu The 9mm Silent Captured Spring is a drop-in component that softens recoil and reduces cycling noise and vibration in your 9mm carbine. The result is a refined rifle that's a pleasure to shoot. Paired with our 9mm bolt assembly, you have the most... ... more
J P Enterprises 9mm Gen 2 Silent Captured Spring System Short Stroke Version - 9mm Gen2 Silent Captu The 9mm Silent Captured Spring is a drop-in component that softens recoil and reduces cycling noise and vibration in your 9mm carbine. The result is a refined rifle that's a pleasure to shoot. Paired with our 9mm bolt assembly, you have the most... | go to store |
 | J P Enterprises Ar-15/ 308 Ar Cleaning Rod Guide - Ar-15 Cleaning Rod Guide Red Replaces the bolt carrier, seals the upper receiver and provides safe and effective cleaning from the breech instead of the muzzle. Solid aluminum rod guide helps prevent throat and chamber damage plus, the rubber "O" rings keep bore cleaning solvents... ... more
J P Enterprises Ar-15/ 308 Ar Cleaning Rod Guide - Ar-15 Cleaning Rod Guide Red Replaces the bolt carrier, seals the upper receiver and provides safe and effective cleaning from the breech instead of the muzzle. Solid aluminum rod guide helps prevent throat and chamber damage plus, the rubber "O" rings keep bore cleaning solvents... | go to store |
 | J P Enterprises Ar .308 Low Mass Operating System Complete Carrier Group - Lmos .308 Enhanced Bcg Qp $20 off $200+. Use code SEPT20A low mass carrier provides the most significant improvement to felt recoil after the addition of a compensator. JP's LMOS carriers remove much of the reciprocating mass out of the rifle's cycling. This translates into less felt recoil and less... ... more
J P Enterprises Ar .308 Low Mass Operating System Complete Carrier Group - Lmos .308 Enhanced Bcg Qp A low mass carrier provides the most significant improvement to felt recoil after the addition of a compensator. JP's LMOS carriers remove much of the reciprocating mass out of the rifle's cycling. This translates into less felt recoil and less... | go to store |
 | J P Enterprises 308 Ar Low Mass Bolt Carriers - Jp .308 Low Mass Bolt Carrier With Qpq $20 off $200+. Use code SEPT20Reduced-weight bolt/carrier assembly helps tame felt recoil on a JP or DPMS or Remington AR-style .308 rifle (LR-308 pattern only). Carrier features the same type of weight-reducing cuts found on the original JPBC-3 AR-15 bolt carrier to give the same... ... more
J P Enterprises 308 Ar Low Mass Bolt Carriers - Jp .308 Low Mass Bolt Carrier With Qpq Reduced-weight bolt/carrier assembly helps tame felt recoil on a JP or DPMS or Remington AR-style .308 rifle (LR-308 pattern only). Carrier features the same type of weight-reducing cuts found on the original JPBC-3 AR-15 bolt carrier to give the same... | go to store |
 | J P Enterprises 308 Ar Enhanced Bolt Assembly - .308 Enhancedbolt Complete bolt assembly is precision machined from an ultra-strong steel alloy to last up to 10 times longer than a standard carbon steel bolt, minimizing the risk of bolt failure during a critical engagement. SAE 9310 steel has a tough, ductile inner... ... more
J P Enterprises 308 Ar Enhanced Bolt Assembly - .308 Enhancedbolt Complete bolt assembly is precision machined from an ultra-strong steel alloy to last up to 10 times longer than a standard carbon steel bolt, minimizing the risk of bolt failure during a critical engagement. SAE 9310 steel has a tough, ductile inner... | go to store |
 | J P Enterprises 308 Ar Low Mass Bolt Carriers - Jp .308 Low Mass Special Polish Stainless Carrier Wi $20 off $200+. Use code SEPT20Reduced-weight bolt/carrier assembly helps tame felt recoil on a JP or DPMS or Remington AR-style .308 rifle (LR-308 pattern only). Carrier features the same type of weight-reducing cuts found on the original JPBC-3 AR-15 bolt carrier to give the same... ... more
J P Enterprises 308 Ar Low Mass Bolt Carriers - Jp .308 Low Mass Special Polish Stainless Carrier Wi Reduced-weight bolt/carrier assembly helps tame felt recoil on a JP or DPMS or Remington AR-style .308 rifle (LR-308 pattern only). Carrier features the same type of weight-reducing cuts found on the original JPBC-3 AR-15 bolt carrier to give the same... | go to store |
 | J P Enterprises 308 Ar Alternate 3 Spring Pack For Jpscs-10 The Alternative Spring Pack Kits are a pack of 3 different spring weights for the JP Silent Captured Spring that allow custom tuning of the device to a given rifle. While the default spring offers the best performance for the widest range of... ... more
J P Enterprises 308 Ar Alternate 3 Spring Pack For Jpscs-10 The Alternative Spring Pack Kits are a pack of 3 different spring weights for the JP Silent Captured Spring that allow custom tuning of the device to a given rifle. While the default spring offers the best performance for the widest range of... | go to store |
 | J P Enterprises Ar-15/ 308 Ar Adjustable Trigger System - .154" Standard 3.5 Lb. Adjustable Trigger Easy-to-fit replacement for factory trigger is fully adjustable for engagement and overtravel, and is available with pull weight as light as 3.5 lbs. Redesigned sear geometry and advanced metallurgy result in a precision-ground sear edge that delivers... ... more
J P Enterprises Ar-15/ 308 Ar Adjustable Trigger System - .154" Standard 3.5 Lb. Adjustable Trigger Easy-to-fit replacement for factory trigger is fully adjustable for engagement and overtravel, and is available with pull weight as light as 3.5 lbs. Redesigned sear geometry and advanced metallurgy result in a precision-ground sear edge that delivers... | go to store |
 | J P Enterprises Silent Captured Spring Tungsten Weight Gen 2 Designed to replace one or more of the existing weights of the JP Silent Captured Spring, these tungsten weights are heavier than the standard components to allow for more reciprocating mass in the operating system. For use in the Gen 2 systems only.... ... more
J P Enterprises Silent Captured Spring Tungsten Weight Gen 2 Designed to replace one or more of the existing weights of the JP Silent Captured Spring, these tungsten weights are heavier than the standard components to allow for more reciprocating mass in the operating system. For use in the Gen 2 systems only.... | go to store |
 | J P Enterprises 308 Ar Enhanced Extractor - 308ar Enhanced Extractor This Enhanced 308 Extractor provides a great upgrade over existing over factory 308 AR extractors. JP completely redesigned the extractor, using improved materials and heat treatment processes. This extractor will hold up for thousands of rounds,... ... more
J P Enterprises 308 Ar Enhanced Extractor - 308ar Enhanced Extractor This Enhanced 308 Extractor provides a great upgrade over existing over factory 308 AR extractors. JP completely redesigned the extractor, using improved materials and heat treatment processes. This extractor will hold up for thousands of rounds,... | go to store |
 | J P Enterprises 308 Ar Low Mass Bolt Carrier Group - Jpbc-4ba Low-Mass Bolt/Carrier $20 off $200+. Use code SEPT20Reduced-weight bolt/carrier assembly helps tame felt recoil on a JP or DPMS or Remington AR-style .308 rifle (LR-308 pattern only). Carrier features the same type of weight-reducing cuts found on the original JPBC-3 AR-15 bolt carrier to give the same... ... more
J P Enterprises 308 Ar Low Mass Bolt Carrier Group - Jpbc-4ba Low-Mass Bolt/Carrier Reduced-weight bolt/carrier assembly helps tame felt recoil on a JP or DPMS or Remington AR-style .308 rifle (LR-308 pattern only). Carrier features the same type of weight-reducing cuts found on the original JPBC-3 AR-15 bolt carrier to give the same... | go to store |
 | J P Enterprises 308 Ar Enhanced High Pressure Bolt Completion Group - 308ar Hp Bolt Completion Group $20 off $200+. Use code SEPT20For anyone using .308/7.62 AR-type rifles, it is common knowledge that many factory rounds exhibit excessive primer flow and/or ejector smear. At its core, this is a result of ammo development being done by manufacturers only for manual platforms... ... more
J P Enterprises 308 Ar Enhanced High Pressure Bolt Completion Group - 308ar Hp Bolt Completion Group For anyone using .308/7.62 AR-type rifles, it is common knowledge that many factory rounds exhibit excessive primer flow and/or ejector smear. At its core, this is a result of ammo development being done by manufacturers only for manual platforms... | go to store |
 | J P Enterprises Ar .308 Recoil Eliminator 30 Caliber - Recoil Eliminator 30 Caliber 5/8-24 Steel Bl Dual, curved restrictor plates with a tremendous amount of surface area stop exiting barrel gases and pull the barrel forward to counteract recoil and muzzle flip. The front sight or scope stays right on target for a faster second shot, plus less felt... ... more
J P Enterprises Ar .308 Recoil Eliminator 30 Caliber - Recoil Eliminator 30 Caliber 5/8-24 Steel Bl Dual, curved restrictor plates with a tremendous amount of surface area stop exiting barrel gases and pull the barrel forward to counteract recoil and muzzle flip. The front sight or scope stays right on target for a faster second shot, plus less felt... | go to store |
 | J P Enterprises Enhanced Gas Ring - Ar 308 Enhanced Gas Ring After testing numerous minute grind callouts, the final JP Enhanced Gas Rings spec is the perfect balance of a solid gas seal with a very low-friction relationship between rings and bolt carrier. Reducing the resistance between these components... ... more
J P Enterprises Enhanced Gas Ring - Ar 308 Enhanced Gas Ring After testing numerous minute grind callouts, the final JP Enhanced Gas Rings spec is the perfect balance of a solid gas seal with a very low-friction relationship between rings and bolt carrier. Reducing the resistance between these components... | go to store |
 | J P Enterprises 308 Ar Enhanced Bolt Completion Group - 308ar Bolt Completion Group Complete bolt assembly is precision machined from an ultra-strong steel alloy to last up to 10 times longer than a standard carbon steel bolt, minimizing the risk of bolt failure during a critical engagement. SAE 9310 steel has a tough, ductile inner... ... more
J P Enterprises 308 Ar Enhanced Bolt Completion Group - 308ar Bolt Completion Group Complete bolt assembly is precision machined from an ultra-strong steel alloy to last up to 10 times longer than a standard carbon steel bolt, minimizing the risk of bolt failure during a critical engagement. SAE 9310 steel has a tough, ductile inner... | go to store |
 | J P Enterprises Ar-15 Alternate 5 Spring Pack For Jpscs-15 - Ar15/M16 Alternate 5 Spring Pack For Jp The Alternative Spring Pack Kits are a pack of 5 different spring weights for the JP Silent Captured Spring that allow custom tuning of the device to a given rifle. While the default spring offers the best performance for the widest range of... ... more
J P Enterprises Ar-15 Alternate 5 Spring Pack For Jpscs-15 - Ar15/M16 Alternate 5 Spring Pack For Jp The Alternative Spring Pack Kits are a pack of 5 different spring weights for the JP Silent Captured Spring that allow custom tuning of the device to a given rifle. While the default spring offers the best performance for the widest range of... | go to store |
 | J P Enterprises Silent Capture Spring Buffer Retainer Pin & Spring While you can use a standard buffer retainer pin and spring with your Silent Captured Spring, installation and removal is difficult to say the least. Until now, that's left the only option of storing the SCS loose. Fortunately, we have a solution.... ... more
J P Enterprises Silent Capture Spring Buffer Retainer Pin & Spring While you can use a standard buffer retainer pin and spring with your Silent Captured Spring, installation and removal is difficult to say the least. Until now, that's left the only option of storing the SCS loose. Fortunately, we have a solution.... | go to store |
 | J P Enterprises Ar-15/M16 9mm Bolt Carrier Group - Ar15 9mm Bolt Assembly $20 off $200+. Use code SEPT20The JP 9mm Bolt Assembly fits Colt 9mm style AR-15 and M16 rifles. This bolt has been tuned by JP to ensure consistent feed, extraction and ejection. Can be used in conjunction with the JP 9mm Silent Capture Spring, for the ultimate in tunability and... ... more
J P Enterprises Ar-15/M16 9mm Bolt Carrier Group - Ar15 9mm Bolt Assembly The JP 9mm Bolt Assembly fits Colt 9mm style AR-15 and M16 rifles. This bolt has been tuned by JP to ensure consistent feed, extraction and ejection. Can be used in conjunction with the JP 9mm Silent Capture Spring, for the ultimate in tunability and... | go to store |
 | J P Enterprises Universal Vice Clamps Fits both flat top AR-308 uppers and AR-15 uppers. Clamp jaws firmly retain the receiver by securely capturing the top rail and receiver lugs Lug-side clamp piece includes different cutouts at either end to fit the front pivot pin lug of either large... ... more
J P Enterprises Universal Vice Clamps Fits both flat top AR-308 uppers and AR-15 uppers. Clamp jaws firmly retain the receiver by securely capturing the top rail and receiver lugs Lug-side clamp piece includes different cutouts at either end to fit the front pivot pin lug of either large... | go to store |
 | J P Enterprises 9mm Carbine Bolt Carrier Group Short Stroke Compatible - 9mm Carbine Bcg Short Strok $20 off $200+. Use code SEPT20Machined to the same exacting tolerances as JP's bolt carriers, this third generation 9mm bolt assembly eliminates the need for a central mass (slug) to readily function with their 9mm JP Silent Captured Spring without compromising bolt weight and... ... more
J P Enterprises 9mm Carbine Bolt Carrier Group Short Stroke Compatible - 9mm Carbine Bcg Short Strok Machined to the same exacting tolerances as JP's bolt carriers, this third generation 9mm bolt assembly eliminates the need for a central mass (slug) to readily function with their 9mm JP Silent Captured Spring without compromising bolt weight and... | go to store |
 | J P Enterprises Jpscs2/Vmos Replacement O-Rings With Spacer Shim - Jpscs2/Vmos Replacement O-Rings W These O-rings will replace any worn, deformed or lost rings from any JP Silent Captured Spring or Variable Mass Operating System (VMOS) bolt carrier. Replacement of O-rings should take place when you start to see fraying or cracking of the rings. This... ... more
J P Enterprises Jpscs2/Vmos Replacement O-Rings With Spacer Shim - Jpscs2/Vmos Replacement O-Rings W These O-rings will replace any worn, deformed or lost rings from any JP Silent Captured Spring or Variable Mass Operating System (VMOS) bolt carrier. Replacement of O-rings should take place when you start to see fraying or cracking of the rings. This... | go to store |
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