The BCM Low Profile .625 Gas Block (BCM-LGB-625) is machined out of steel with a phosphate finish and has two set screws on the bottom to hold it into place.

Features:

• .625 diameter barrels
• 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