C158 Manganese Phosphate BCG

On sale: $138.88
Retail Price:$169.95
You Save:$31.07(18%)
In Stock
Part Number:MAG-BCG

Choose Options

Blank (No Logos)
MA Logo
Dickbutt Nods
The MA Bolt Carrier Group - Auto Version - for your M4 or AR15.

  • M16 Manganese Phosphate 8620 Alloy Steel Carrier
  • Hard Chrome Bore
  • Blank or Logo Laser Engraved
  • Carpenter 158 Steel
  • Heat Treated
  • Shot Peened
  • HPT Bolt - High Pressure Tested 
  • MPI Bolt - Magnetic Particle Inspected
  • 4140 Phosphate Extractor (NON MIM)
  • Sprinco 5-coil Extractor Spring
  • Sprinco Ejector Spring
  • 8620 Nitride Gas Key (Hand Lapped)
  • Gas Key Properly Installed Using Vibra-Tite 541 with OCKS Fasteners
  • 8640 Steel Chrome Plated Firing Pin 
  • 8620 Cam Pin with directional arrow lasered on
  • Bolt Comes Pre-Lubed with our house blended lube

The warranty is NOT transferrable and is only valid to the original purchaser.

Each BCG is individually test fired (3rds of ARMSCOR 223REM 55GR) BCG will ship as is, BCG was lubed and might be dirty from the test firing procedure.

The Modern Armory Bolt Carrier Group is proudly MADE IN THE USA by hard working American men and women.

*Lifetime Guarantee covers manufacturing defects in materials and workmanship, regardless of the age of the product, but it does not cover normal wear and tear. Wear and tear is damage that naturally and inevitably occurs as a result of normal use.

ITAR: International Traffic in Arms Regulations Controlled

5 Stars
This BCG has to be the best bang for your buck! It comes with ock screws that are beautifully staked in place. It paired nicely with my 10.5" Ballistics Advantage barrel, I took it out and it ran flawlessly! This BCG looks to be built to last, with the Magnesium Phosphate coating I would expect years and years of abuse.
Did you find this helpful?  2 of 2 Found Helpful
Reviewed by:  from Missouri . on 8/6/2020
5 Stars
Looks great
Havent taken it out to the range yet but this bcg looks great. The ocks screws, the staking, the machining all look great. Definitely plan on buying more.
Did you find this helpful?  2 of 2 Found Helpful
Reviewed by:  from Pittsburgh. on 7/13/2020

Related Items

Recently Viewed Items