Features: Weighs 4.6 oz Contains two tungsten weights and one steel weight Standard carbine length buffer Aluminum exterior Fits AR-15 and M16 carbine buffer tubes Use with standard AR-15/M16 carbine buffer springs H3 is 5.4 oz Benefits: Increased weight allows for more reliable function in rifles with shorter gas systems Heavier weight reduces bolt bounce in full auto fire Increased weight also softens recoil 4.6 oz weight also allows for a longer dwell time slowing down the cycling of the rifle H3 is 5.4 oz Mfg: Colt
