Expect nothing less than professional grade weaponry from Bravo Company USA, one of the nation's largest stocking inventories of AR-15, M4, and M16 parts and accessories.The Intermediate Buffer System takes advantage of an improved design for use on the AR-15 platform. This system aids in lowering bolt carrier velocity, reduces cyclic rate, and softens felt recoil, increasing overall reliability and performance. Machined from 7075-T6 aluminum, the intermediate length receiver extension includes an M16 rifle action spring and VLTOR A5 buffer.NOTE: This system is not interchangeable with carbine length components.Features: 3.8 oz VLTOR A5H0 buffer BCM intermediate receiver extension BCM QD end plate MIL-SPEC castle nut Rifle action spring 7075-T6 aluminum Type III Class 2 hardcoat anodized