KAK Industry AR-15 Carrier Completion Kit Features The KAK Industry AR-15 Carrier Completion Kit includes everything needed to finish a bolt carrier group build starting with a chrome plated 8740 steel firing pin that is precision ground and heat treated for consistent reliable ignition. The 4140 steel cam pin is heat treated with either hard chrome or phosphate plating giving it the strength needed to withstand repeated cycling under recoil. A mil-spec phosphate coated firing pin retaining pin rounds out the kit ensuring every small part meets the same durability standard as the major components. Together these parts fit any standard AR-15 or M16 style carrier making the kit a drop in solution for builds or repairs. Keeping a completion kit like this on hand means builders and shooters can quickly swap worn parts without hunting down individual pins. The silver finish matches factory chrome finishes commonly found on AR-15 bolt carrier groups keeping the build looking consistent. KAK Industry was founded to address a gap in the market for quality affordable American made AR-15 components and this kit reflects that same value driven approach. For anyone building maintaining or stocking spares for an AR-15 platform rifle the KAK Industry Carrier Completion Kit is available for sale at GrabAGun. KAK Industry AR-15 Carrier Completion Kit Specifications Manufacturer: KAK Industry Model: AR-15 Carrier Completion Kit Type: Firing Pin Kit Compatible Hosts: AR-15 M16 Color: Silver Material: 4140 / 8740 Steel Available At: GrabAGun