JP Full Mass Stainless(Black) Tactical Carrier with key

JP Full Mass Stainless Tactical Carrier with key installed.Machined from 416 stainless steel for the utmost in reliability and longevity. Features dust cover notch and forward assist serrations. 100% increase in bearing surface for smoother operation, improved alignment and lower wear in the upper receiver. Recommended for Duty use where poor conditions demand the highest level of reliable function. Finished with a QPQ hardcoat process to yield incredibly hard and lubricious bearing surfaces.Not for use in AR-10-type rifles.Weight: 8.5oz with key installed