Bravo Company MFG Low Profile Gas Block Steel w/ set Screws 625 Black . 750 Black Steel to keep your rifle performing at its highest level. Bravo Company MFG machined these AR Gas Blocks from steel and added a phosphate finish to extend its lifetime and enhance its resistance to corrosive elements and wear. This Bravo Company MFG Low Profile Gas Block w/ Set Screws was crafted within very strict Mil-Spec tolerances throughout. Keep your weapon cycling gas properly with this Bravo Company MFG BCM Low Profile Gas Block 750. Specifications for Bravo Company MFG Gas Block Low Profile .750 Black Steel: Type/color: Gas block Size/finish: .750/black Material: Steel Ar-15 accessory: Y Features of Bravo Company MFG Gas Block Low Profile .750 Black Steel: For AR15 M16 M4 M4A1. Machined of steel phosphate finish for .750 barrels Manufactured within very tight Mil-Spec tolerances on all ID's Barrel ID honed after finish per USGI TDP Set Screws are Steel 10-32 x 3/16 Knurled Cup Point Package Contents: Bravo Company MFG Low Profile Gas Block Steel w/ set Screws Bravo Company MFG Gas Block Low Profile .625 Black Steel