Fortis Gas Block .750 Sts

The Fortis Gas Block .750 Stainless Steel is a low-profile gas block engineered for precision rifle builds that demand zero interference with modern optics and mounting systems. Manufactured in America by Fortis Manufacturing, Inc., this .750 bore diameter gas block attaches directly to barrels with a two-screw interface, providing a secure, repeatable platform for gas tube alignment without the bulk of traditional profile designs.

Designed specifically for .750 gas seat geometry, this block comes equipped with two adjustment set screws and a roll pin to lock the assembly once tuned. The low-profile architecture minimizes sight-line obstruction and rail real estate consumption—critical for modern optics setups where upper receiver space commands premium value. Stainless steel construction resists corrosion and wear, a practical consideration for shooters running suppressed systems or operating in high-salt environments where standard parkerized finishes degrade over extended service.

This gas block suits serious shooters building match-grade AR platforms—competition shooters, precision rifle builders, and operators prioritizing low-drag component integration. The two-screw clamping design allows installation without permanent barrel modification, a requirement for builders who maintain barrel cycling flexibility or plan future upgrades. Proper gas port alignment and screw tension are essential for reliable function; tight tolerances reward deliberate assembly and periodic inspection.

Gas block selection depends on bore diameter match—the .750 specification targets mid-length or rifle-length systems using barrels with .750-inch gas port seats. Confirming your barrel's gas seat dimension before purchase eliminates fitment issues and ensures repeatable zero stability across shooting sessions.