The Luth-AR Double Tungsten H2 Carbine Buffer is engineered for .223/5.56 AR rifles with a precision-weighted design featuring 2 tungsten slugs and 1 steel slug for optimal performance.Double Tungsten H2 Carbine Buffer for .223/5.562 tungsten slugs and 1 steel slug construction4.8 oz total weight for enhanced reliabilityDesigned for AR-15 platform riflesImproves reliable function with shorter gas systemsReduces felt recoil during operationThis heavier buffer system is ideal for AR-15 builds requiring improved cycling reliability particularly with shorter gas systems while providing the added benefit of reduced felt recoil for enhanced shooting comfort.