KAK Industry AR-15 Carrier Completion Kit Features The KAK Industry AR-15 Carrier Completion Kit supplies the small but essential hardware needed to finish out a bolt carrier group on an AR-15 or M16 pattern rifle. The cam pin is machined from 4140 steel Swiss turned and heat treated before receiving a hard chrome finish giving it the strength and wear resistance needed to survive thousands of cycling events inside the action. The firing pin is machined to mil-spec print tolerances from high quality 8740 steel precision ground and properly heat treated for durability then finished with a chrome plating that resists corrosion and reduces friction during firing pin travel. Together these two components handle critical functions in ignition and bolt rotation that directly affect reliability. Rounding out the kit is a mil-spec phosphate coated firing pin retaining pin which secures the firing pin in place within the bolt carrier and is built to the same dimensional standard as factory original parts. Because every component in the kit is manufactured to mil-spec dimensions builders can expect reliable drop in fit on standard AR15 and M16 style carriers without additional fitting. KAK Industry was founded in 2011 specifically to fill a gap in the market for quality American made AR-15 components at affordable sustainable prices and this completion kit reflects that mission in a simple practical package. Whether completing a new build or keeping spares on hand for field repairs the KAK Industry AR-15 Carrier Completion Kit gives builders mil-spec reliability at a reasonable cost. KAK Industry AR-15 Carrier Completion Kit Specifications Manufacturer: KAK Industry Model: AR-15 Carrier Completion Kit Color: Chrome Material: Steel Firearm Fit: AR15 / M16 Includes: Cam Pin Firing Pin Retaining Pin Number of Pieces: 3 Available At: GrabAGun