A solid Bolt Carrier Group is a key component of your Ar15. Microbest produces top quality mil-spec BCGs for the military and other quality rifle manufacturers. This 5.56 / 223 BCG features a full hard chrome exterior coating and is properly made, ready to run reliably in your rifle. These may have small blemishes, machine marks, or coating defects that do not affect function.
Mil Spec 8620 Carrier, Full Chrome
- 8620 Quality Steel
- Full Auto M-16 cut
Mil-Spec Bolt , Full Chrome
- Carpenter 158 Steel (c158)
- Shot Peened
- High Pressure Tested (HPT)
- Magnetic Particle Inspected (MPI)
- Sprinco Extractor and ejector springs, with sprinco insert
Mil Spec Extractor – Phosphate
- Phosphate extractor has more friction when gripping the case rim, allowing for more reliable extraction.
- 4140 Steel
- Extractor Spring by Sprinco
- Black Extractor Insert
Mil Spec Gas Key, Full Chrome
- 4130 Steel
- Grade 8 Hardware
- OCKS gas key screws
- Properly Staked
4140 Steel Cam pin, chrome finish
Firing Pin, retaining pin
Weight: 11.6oz
-300x300.jpg "Left Hand Nickel Boron BCG M16 / Ar15 Bolt Carrier Group, photo")
(1)-300x300.jpg "Blem Titanium Nitride TiN M16 / Ar15 MPI BCG 5.56/223, photo")
10/10 – This BCG was exactly what I needed for my build, easy to clean and reliable as I could ask for. Mid State Firearms shipped it to me in 2 days and also included a free sling and their own branded koozie! If you’re thinking about picking this up just do it, you won’t regret it.
FUN STICK – Shooting full auto you need this bolt. I have watched people shooting full auto and it functions flawlessly! My semi rifles will like this bolt.
Disappointed – Not worth what i paid (of course goes on sale after i purchasel On paper this bolt should have been great but the one I got spec’d out middle of the road. It took over a week for them to get around to shipping it and had zero luck getting ahold of anyone in customer service. Lesson learned……
Microbest m16 Full Chrome HPT / MPI Bolt Carrier Group BCG, Sprinco, OCKS, Phos Extractor, blem
Microbest m16 Full Chrome HPT / MPI Bolt Carrier Group BCG, Sprinco, OCKS, Phos Extractor, blem