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.
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)
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 and Oring
Mil Spec Gas Key, Full Chrome
- 4130 Steel
- Grade 8 Hardware
- Properly Staked
4140 Steel Cam pin, chrome finish
Firing Pin, retaining pin
Weight: 11.6oz
(1)-300x300.jpg "Titanium Nitride TiN M16 / Ar15 MPI Bolt Carrier Group 5.56/223, photo")
-300x300.jpg "Left Hand Nickel Boron BCG M16 / Ar15 Bolt Carrier Group, photo")
Great bolt feels good looks good – Have yet to use but it looks great
QC issue and no response – I had an issue with the extractor pin, but Mid State took care of me.
Great product and service – Shipped fast, fair price, and got exactly what I wanted and not a blem item like other sites have done. Wish I knew about Midstate before.
Micro… Best! – First time ordering online from Mid State was straightforward, with fair pricing, and good shipping! Hoping to do more business with them! Thanks!
sound of freedom – This was a great set up. I loved being able to customize the set up. Only issue I had was my own fault as a newb to building these. I used a heavy barrel in a slim hand guard. It makes adding attachments tough with clearances. Hoping someday to also get an AR10 from here.