Offered in both 5.56/.223 and 7.62/.308 Caliber, the Lantac M-SPEC 5.56/.223 BCG is precision machined to milspec dimensions and tolerances. The carrier is full auto style with increased mass and is manufactured from 8620 steel, case hardened and hard turned/ground so that internal dimension are exact to mil specifications. It is then QPQ Nitrided rather than Type M Phosphated to give increased corrosion resistance, durability and performance. The Bolt is machined from Carpenter 158, shot peened and hard turned as per the military spec. Each BCG is further fitted with a Lantac CP-R360 domed head cam pin, which are precision machined from 17-4PH stainless steel, hand polished and hardened to H900 condition, this further reduces friction and wear within the upper receiver. The M-SPEC line of products are ideal for budget builds where quality and reliability are still paramount. Specifications for LANTAC M-SPEC Bolt Carrier Group (BCG): Manufacturer: LANTAC Color: Black Finish: QPQ Nitride Fabric/Material: 17-4PH stainless steel, 8620 Steel Gun Model: AR-15 Condition: New Bolt Material: Steel Carrier Material: 8620 Steel Features of LANTAC M-SPEC Bolt Carrier Group BCG 8620 Carrier, Heat Treated, Hard Turned Ground. MPI Carpenter 158 Bolt, Shot Peened, Hard Turned / Ground. QPQ Nitride Finish. CP-R360 Domed Cam Pin Shot Peening is conducted with S110 shot, Established by Almen Gage A-2 strip .006 -.008 Lifetime Warranty. Package Contents: LANTAC M-SPEC Bolt Carrier Group
Antonio –
I have been able to Put about 400 rounds through this BCG and it hasn't skipped a beat. The Gas key staking is decent. The machining and nitride finish are very nice, the domed ss cam pin is definitely a nice touch. I would buy another one.
Kodiak –
Can’t never go wrong with lantac products. It can teak the beating
Dan –
Look no further purchased two and they are amazing suppressed or not working every time , great finish decent priced .Has a C158 bolt that will eat anything you have , upgraded cam pin and nitrade finish for smooth op.
Dan –
Look no further purchased two and they are amazing suppressed or not working every time , great finish decent priced .Has a C158 bolt that will eat anything you have , upgraded cam pin and nitrade finish for smooth op.