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KVP 17-4 SS Pistol Caliber Carbine XP Spring
Eliminate the possibility of losing gas pressure needed to cycle an AR-15 by switching out the gas rings in your AR-15 BCG. The simple one piece gas ring provides the shooter with a 100% guarantee that the BCG will never have misaligned gas rings. The one piece ring is easy to install, and is constructed of Stainless Steel, which provides a long, worry free duty life in any AR-15.

Pistol caliber carbines such as 9mm, .40 S&W, .45 ACP, and 10mm are a blast to shoot but can be tough on AR-15's internal components. Without a properly tuned blowback system, you run the risk of being overly destructive on internal lower parts. Running a blowback AR15 with a suppressor can further increase the risk for damage. In addition to a properly weighted buffer, the KVP Extra Power recoil spring is a must! The KVP XP 17-4 SS spring offers increase pre-load over standard springs. The additional preload helps keep Blowback operated systems closed longer.

An extra firing pin is a perfect addition for your range bag. If you are a recreational shooter, or a competitor in USPSA PCC Class shoots don't let your range day or competition end early. We rarely have firing pins break in our 9mm BCG's, but things can happen. Our customers demanded we offer backup firing pins..... We listened!

Our kit comes with a firing pin and firing pin spring.
KVP Heavy Tungsten Carbine Buffers KVP H3 - 5.4 ounce Tungsten Buffer KVP Solid Stainless Steel Blowback Buffer - 7.5oz
There are many ways to smooth the operation of a AR-15 Carbine. One of the most cost effective and quickest upgrades available, is installation of a KVP™ Heavy Tungsten Buffer. There are many ways to smooth the operation of a AR-15 Carbine. One of the most cost effective and quickest upgrades available, is installation of a KVP™ Heavy Tungsten Buffer.

Pistol caliber carbines such as 9mm, .40 S&W, .45 ACP, and 10mm are a blast to shoot but can be tough on AR-15's internal components. Without a properly tuned blowback system, you run the risk of being overly destructive on internal lower parts. Runing a blowback AR15 with a suppressor can further increase the risk for damage. Adding the KVP 7.5 oz Stainless Steel buffer is the best way to give your blow back system a fighting chance. Do yourself a favor and fine tune your setup for the softest shooting PCC possible.

KVP AR-10 308 CAR SS Tungsten Buffer 5.6 oz. KVP 10oz Tungsten Blowback Buffer

Carbine style AR-10's typically have a severely over gassed cycle system. An over gasses system, paired with a light factory buffer, equals a recipe for pre-mature internal component destruction. Help protect valuable internal components, like triggers, by upgrading your AR-10 Carbine buffer to a KVP 5.6 oz AR10 buffer.

Pistol caliber carbines such as 9mm, .40 S&W, .45 ACP, and 10mm are a blast to shoot but can be tough on AR-15's internal components....Add a suppressor, and the increased back pressure can cause tremendous damage, without properly tuning your blowback system. The KVP 10 oz tungsten blowback buffer helps tame the destructive forces in suppressed and standard blowback AR15's. Do yourself a favor and fine tune your setup for the softest shooting PCC possible!

The KVP 9mm BCG is a feature packed solution for your 9mm Blow Back Carbine or Pistol. Our 9mm BCG is compatible with either Glock or Colt style magazines. The carrier is constructed of US made 8620 steel, with a Nitride QPQ finish. The QPQ finish offers excellent wear and weather resistant properties that are superior to lower grade phosphate finishing processes. We've also added a beefier firing pin retention spring to help lower the likely hood of firing pin breakage, that is common in other 9mm BCG's.

***NOTE***
Many after market drop in triggers use modified hammers and can be temperamental in Blowback systems. For the most consistent results a mil-spec fire control group is recommended. However, in our testing, these aftermarket fire control groups should work in most circumstances: POF, Hiperfire EDT and 24 series, Geissele, Timney, Rock River, and Spikes.