The Dirty Bird Industries AR-15 Carbine buffer matches the standard 3.0 oz weight the AR-15 was designed around. Perfect to keep as a back up or for hard use guns that are intended to be as close to MIL-SPEC as possible. These buffers feature a machined aluminum body with a durable black hardcoat anodized finish and rubber bumper to dampen recoil.Features: 3.25" carbine buffer 3 ounce weight Machined aluminum body Made in the U.S.A.3.25" Carbine Buffer for use with MIL-SPEC and Commercial spec AR-15 receiver extensions. Proudly made in the U.S.A.