BCM Low Profile Gas Block for AR15, M16, M4, M4A1. Machined of steel, phosphate finish
Manufactured within very tight Mil-Spec tolerances on all ID’s.
Barrel ID honed after finish per USGI TDP.
Made by Bravo Company MFG, Inc. with set screw mounting.
Set Screws are Steel 10-32 x 3/16 Knurled Cup Point
gskjr78 –
Need a gas block to do gas block type shit? then this is the gas block to get. the coating on mine was dull and almost grey in color unsure if that is correct but i didn’t care about color. works great, set screws weren’t carbon locked when i did a rail change either.