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.
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!
Due to tungsten weight variation, actual weight of the buffer is between 10.3 and 10.5 ounces.