The Luth-AR H1 Carbine Buffer Assembly is engineered for .223/5.56 AR rifles with a precisely weighted 4 oz design featuring tungsten and steel construction for enhanced reliability and performance.Luth-AR H1 Carbine Recoil Buffer AssemblyDesigned for .223/5.56 chambered AR rifles4 oz total weight with 1 tungsten slug and 2 steel slugsImproves reliable function with mid-length or shorter gas systemsReduces felt recoil for better shooting controlThis heavier buffer assembly is ideal for AR-15 builds with mid-length or carbine gas systems providing improved cycling reliability and smoother operation while reducing perceived recoil for enhanced shooting comfort.