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.

Mil-spec AR-15 triggers typically have an 8 to 9 pound trigger pull with factory springs. Utilizing the KVP Reduced Power Spring Kit should achieve a trigger pull reduction of 2 to 4 pounds. A 5 to 6 pound trigger pull is typical after installation of the KVP Reduced Power Spring Kit.

Upgrade your standard, carbon steel recoil spring, to a KVP 17-4 Stainless steel recoil spring. Carbon steel springs have the potential to rust if not properly cared for. KVP passivate finish's all our 17-4 Stainless Steel CAR recoil springs to protect them in even the harshest of environments. In addition, our AR-15 Carbine Spring has a cycle life rating over 10,000. If you demand the best, the KVP Carbine Spring will deliver.

Kaw Valley Precision Anti-Walk Pin Kit - Set of (2). For use with AR15 Hammer and Trigger Groups. Pins are machined from 4140 Steel and are the Standard .154 size.

Set comes with (2) Posts, (2) Wrenches and (4) Screws.

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.

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!