The KAK Industry AR-15 Bolt Carrier Group, M16 Profile, .224 Valkyrie/6.8 SPC (brand part no. 425-0512-019) is a complete BCG for AR-15 rifles chambered in .224 Valkyrie or 6.8 SPC. KAK Industry also lists the group for .338 Spectre. The M16 auto profile carrier is machined from 8620 steel and finished in chrome-lined phosphate, and the bolt is machined from a single piece of 9310 steel. It is a standard side vent design.

Key Specifications

• The bolt carrier group is made for .224 Valkyrie and 6.8 SPC, and KAK also lists it for .338 Spectre.
• The carrier has an M16 auto profile, the full-profile shape of the military carrier.
• The carrier is machined from 8620 aircraft and bearing quality steel, heat treated and ground.
• The bolt is machined from a single piece of 9310 steel, shot peened and magnetic particle inspected.
• The firing pin is 8740 steel machined to the mil-spec print, ground and chrome plated.
• The carrier has a chrome-lined phosphate finish that resists wear and corrosion.
• It is a side vent design, matching the vent type KAK lists for this group.

Frequently Asked Questions

What calibers does this bolt carrier group fit? KAK lists it for .224 Valkyrie, 6.8 SPC and .338 Spectre on the AR-15 platform.

What is the finish? The carrier and gas key have a chrome-lined phosphate finish, and the bolt, extractor and cam pin are phosphate coated.

Is it left-hand or right-hand? KAK lists it as right hand.

Buy the KAK Industry AR-15 Bolt Carrier Group, M16 Profile, .224 Valkyrie/6.8 SPC

A bolt carrier group sized to the cartridge is what keeps a Valkyrie or 6.8 SPC build running. Order this one from our Lubbock, Texas gun shop for fast shipping, and look through more AR bolt carrier groups for the rest of your upper.