Sniper AR-15 Stock Carbine Recoil Buffer Aluminum 3oz Silver. 223/5/56 - use with Mil-Spec or Commercial buffer tubes. Specifications for Sniper AR-15 Stock Carbine Recoil Buffers: Manufacturer: Sniper Color: Silver Fabric/Material: Aircraft Grade Aluminum Gun Model: AR-15 Weight: 3 oz Features of Sniper AR-15 Stock Carbine Recoil Buffer Precision Machined from Premium Aircraft Grade Aluminum 3.0oz Package Contents: Sniper AR-15 Stock Carbine Recoil Buffer What firearm models does the manufacturer say Sniper AR-15 Stock Carbine Recoil Buffers is compatible with? The manufacturer suggests that Sniper AR-15 Stock Carbine Recoil Buffers is compatible with AR-15Sniper ASBF01: AR-15 Stock Carbine Recoil Buffer Aluminum 3oz Silver