Improved carrier geometry with M16 profile. NiB (Nickel Boron) plating reduces friction, adding corrosion resistance inside and out as well as wear resistance. Bolt machined from 9310 steel and MPI tested and marked. Carrier machined from 8620 steel. Shot peened precision ground diameters. Magnetic particle inspected and laser marked. Extractor machined from S7 tool steel. Crane extractor O ring to boost extraction clamping force. Gas key machined from billet 4140 with grade fasteners and staked to mil spec. Chrome plated firing pin per mil spec. Specifications for Alpha Shooting Sports ALPHA Premium 5.56 NiB V2 Bolt Carrier Group (BCG): Manufacturer: Alpha Shooting Sports Color: Silver Finish: Nickel Plated Fabric/Material: Steel Cartridge: 5.56x45mm NATO Condition: New Bolt Material: 9310 Steel Carrier Material: 8620 Steel Features: Improved carrier geometry with M16 profile NiB (Nickel Boron) plating reduces friction, adding corrosion resistance inside and out as well as wear resistance Bolt machined from 9310 steel and MPI tested and marked Carrier machined from 8620 steel Shot peened precision ground diameters Magnetic particle inspected and laser marked Extractor machined from S7 tool steel Crane extractor O ring to boost extraction clamping force Gas key: Machined from billet 4140 with grade fasteners and staked to mil spec Chrome plated firing pin per mil spec Package Contents: Alpha Shooting Sports ALPHA Premium 5.56 NiB V2 Bolt Carrier Group
6 reviews for Alpha Shooting Sports ALPHA Premium 5.56 NiB V2 Bolt Carrier Group (BCG)
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Berry –
Took a chance on this Bolt Carrier Group and glad I did. Been working perfect in my AR-upper. The finish is very smooth and makes charging it easy. Price was well worth it and recommend it for any AR.
Hooty in yo fish –
I have two of their BCGs one chrome and the other black. One is in a 7.5 and the other in a 10.5 , both .300blk. Hundreds of rounds,never a problem, it's never failed to extract or never double fed. I've got a few cheap mags I use when I'm in my backyard and it won't stay open after the last round but never does it with my Hex,or Magpul magazines. Wood buy again.
AR King –
The BCG in my rifle was showing some bad wear so I decided replace it. Added a little lube to the bcg and dropped her right in. Took it out over the weekend and ran 250 rounds and it never missed a beat. Racking and charging the rifle was noticeable smoother compared to my old bcg.
Brad –
This was the last part I needed to complete my build. It shipped fast and replacing my old black bolt carrier group was easy. Runs great with very little oil. Easy to clean even with the dirtiest of ammo.
J-MAN –
Bolt Carrier Group has a great finish and smooth as heck. Been running one of these for past year with over 1000rds and cleans up easy every time. I oil it for extra smooth cycling. I might get another one as a backup or swap out from one of my older AR-Upper.
Jun Jun –
Decided to take a chance on this bcg despite the bad reviews since I didn't have issues with my Alpha Slides. It dropped in and even ran with the crappiest steel case ammo. Machining looks great and nickel boron finish just as awesome.