KAK Industry K-SPEC Enhanced Bolt Carrier Group

The K-Spec BCG combines multiple key features focused on increasing the reliability of your AR-15 style firearm no matter if you're running suppressed or unsuppressed, regardless of conditions. The K-Spec is a truly plug and play BCG that will accommodate whatever configuration your mission requires. For those running suppressed, the K-Spec requires no additional tuning or tweaking of the gas or recoil system to run reliably. Like all KAK BCGs, the K-Spec is machined to the M16 full-auto profile.When used in conjunction with a suppressor, the gas redirect produces a quieter report. For enhanced functionality in adverse and rugged conditions such as sand, mud, dirt, and grime, the slotted angled carrier rails are designed for debris disbursement, resulting in ultra-high functionality in the toughest conditions, including suppressor fouling and foreign contaminates. Strategically located angle cuts in the rails result in fouling and debris being moved into non-critical areas that are not in contact with the upper receiver and do not affect the function of the firearm.In an effort to reduce the amount of debris and gas vented towards the shooter's face, the two standard gas relief ports have been relocated from the ejection port side of the K-Spec carrier and placed underneath, in the magazine feed lip channels. Two additional emergency relief ports have also been added to the bottom of the carrier to mitigate structural damage in the event of a case head separation. Testing has shown that venting the gasses through the magazine well has no negative impact on the feeding or function of the magazine nor ammunition, and any added heat is negligible.The K-Spec dual ejector system uses mil-spec ejectors and springs that require no proprietary parts. Ejector holes are centered on the lugs to avoid any reduction in strength of the bolt. The dual ejector system increases the ejection reliability and adds consistency to the ejection pattern. KAK industry has been manufacturing dual ejector bolts for the AR-10/LR308 platform for over a decade and has used that experience to create a durable and reliable dual ejector system for the AR-15 platform.Designed to function reliably in the toughest conditionsOptimized for both suppressed and unsuppressed use- all uses, all conditionsDual ejectors for enhanced reliabilityAngled carrier rail cuts for flawless function in adverse conditions and prolonged suppressed useDownward gas ports to reduce gas blowback to shooterFull auto profilePermatex added between gas key and carrier mating surfaceCarrier- 8620 steel, outside rails, bolt runs, and gas bores ground to 0.0002 tolerances, NP3 finish, chorme linedBolt- 9310 steel, outside diameter ground to 0.0002 tolerances, MPI tested, NP3 finishFiring Pin- 8740 steel, Swiss turned, heat treated, precision ground, chrome platedCam Pin- 4140 steel, Swiss turned, heat treated, NP3 finishExtractor- 4140 steel, fully machined, phosphate coatedExtractor Pin- S7 tool steel, ground, heat treatedEjector- S7 tool steel, ground, heat treatedGas Key- 4130 steel, heat treated, NP3 finish, secured with T25 Torx fasteners, torqued to spec, staked with hydraulic staking machine11.5oz