C158 Manganese Phosphate BCG

review
5
0
5
Your Price: $176.00
Out of Stock.
Part Number:MAG-BCG

Choose Options

Options
Blank (No Logos)
MA Logo
Dickbutt Logo
Dickbutt Nods
Fasteners
Mil-Spec
OCKS (+$6.00)
Extractor Spring
Mil-Spec
Sprinco 5-Coil (+$3.95)
Ejector Spring
Mil-Spec
Sprinco Enhanced Ejector (+$4.39)
PLEASE READ
****The BCG has changed, it now comes as MIL-SPEC and upgrades have to be selected****


The MA Bolt Carrier Group - Auto Version - for your M4 or AR15.


Features:
  • 8620 Alloy Steel Carrier
  • Manganese Phosphate Finish
  • Hard Chrome Bore
  • Blank or Logo Laser Engraved
  • Carpenter 158 Steel
  • Heat Treated
  • Shot Peened
  • MPI Bolt - Magnetic Particle Inspected
  • 4140 Phosphate Extractor (NON MIM)
  • 8620 Mag Phos Chrome Lined Gas Key (Hand Lapped)
  • Gas Key Properly Installed Using Vibra-Tite 541
  • 8640 Steel Chrome Plated Firing Pin 
  • 8620 Cam Pin
  • Bolt Comes Pre-Lubed with our house blended lube
  • FREE GAS RINGS FOR LIFE
UPGRADES
  • OCKS Fasteners
  • Sprinco 5-coil Extractor Spring
  • Sprinco Ejector Spring

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
Awesome!
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
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
5
5 Stars
ALL HAIL DICKBUTT
Great BCG!!! I have it in a LMT upper with a Criterion 16 inch core barrel. This is my 3rd BCG from MA.
Did you find this helpful? 
Reviewed by: (Verified Buyer)  from Davenport . on 1/23/2024
5

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