5.56 / 300 BLK Bolt Carrier Group (Phosphate)

5.56 / 300 BLK Bolt Carrier Group (Phosphate)

$160.00

These 5.56 / 300 BLK Bolt Carrier Groups are Phosphate Coated with Chrome Lined Gas Key & Bolt Channel, Full-Auto rated, properly staked, and the bolts are Matched to the barrel.

Our Rosco Phosphate Bolt Carrier Groups are designed to meet the modern-day carbine shooters requirements. We have also balanced input from our consumers and military end users in order to bring you the product you need, not just the one we want to sell you.

(1 customer review)

In stock

These 5.56 / 300 BLK Bolt Carrier Groups are Phosphate Coated with Chrome Lined Gas Key & Bolt Channel, Full-Auto rated, properly staked, and the bolts are Matched to the barrel. Our Rosco Phosphate Bolt Carrier Groups are designed to meet the modern-day carbine shooters requirements. We have also balanced input from our consumers and military end users in order to bring you the product you need, not just the one we want to sell you.

All Rosco BCG’s are to MIL Specification and have a properly staked gas key along with a chrome lined coating for extended performance. They also feature a Shot Peened/ MP tested Matched bolt (with upgraded extractor) which is designed to lock up perfectly with our extensions for extreme accuracy. These BCG’s are made to withstand Full-Auto rated fire and unforgiving use from the end user.

Carrier Material: 8620 Steel
Gas Key: 4130 Steel, attached with Grade 8 hardware, properly staked
Cam Pin: Hardened 4340 Steel
Firing Pin: 8740 Steel, Heat Treated, Mil-Spec, Center-less ground, Hard Chrome Plated
Bolt Material: C158, , Phosphate Coated, MPI/HPT
Extractor: 4140 Steel, Heat Treated, Shot Peened
Ejector: S2-S7 Tool Steel, Shot Peened
Our Phosphate/Chrome BCGs ship with upgraded Sprinco Extractor Kit

Additional information

Weight 0.7875 lbs
Dimensions 8 × 1.25 × 1.25 in

1 review for 5.56 / 300 BLK Bolt Carrier Group (Phosphate)

  1. M Koz (verified owner)

    Two things:
    1. This BCG completed my Q Sugar Weasel upper, and performs as intended. Flawlessly.
    2. Packaging. I cannot begin to explain how impressed and satisfied I am by Rosco’s packaging. Same goes for the barrel I purchased a while back. Good packaging speaks a lot about the care of a company.
    Ultra satisfieddddddd.

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