Forward Controls Design Low Profile AR-15 Gas Block - Set Screw - .750"
Details
The Forward Controls Design GBF Low Profile AR-15 Gas Block is machined to provide durability and precision on barrels with a .750" gas seat diameter. Made from heat-treated 4140 bar stock and coated with manganese phosphate, this low profile gas block maintains tight tolerances for effective sealing and long-term reliability.
Features:
- Heat-treated 4140 steel construction
- Manganese phosphate finish
- .750" gas seat diameter
- Semi-blind gas tube hole design
- Bosses on both sides for barrel pinning
- Includes gas tube pin and knurled set screws
- Made in the U.S.A.
Bosses machined into both sides of the block give a gunsmith a correct reference point for drilling and pinning the block to the barrel for extra security, while the knurled set screws handle day-to-day mounting. The manganese phosphate finish protects the 4140 steel body from wear and corrosion over years of use, and the semi-blind gas tube hole design keeps the block's profile clean while still sealing effectively against gas leakage, an approach Forward Controls Design carries across its whole gas block lineup.
Forward Controls Design builds AR-15 parts around function over form, engineering features like drift holes for stuck gas tubes and dual pinning bosses that solve real problems for armorers and high-volume shooters.