CORE ELITE OPERATIONS .750 ADJUSTABLE GAS BLOCK FOR AR-15 A standard gas block gives you one setting — whatever the manufacturer decided works for their load. The Core Elite Operations .750 Adjustable Gas Block puts that control back in your hands. By turning the adjustment screw, you regulate exactly how much gas diverts from the barrel into the gas system — letting you tune cycling reliability across different ammunition loads, suppressed versus unsuppressed configurations, and varying environmental conditions without swapping components or returning to an armorer. The bore is precision honed to exact tolerances, ensuring a gas-tight barrel fit that doesn't bleed pressure at the interface. Every unit is 100% dimensionally inspected before it leaves the floor. Black nitride finish penetrates the steel at the surface level — not a coating that chips or wears through. Corrosion-resistant and durable at the contact points that take the most abuse. Low-profile design clears free-float handguards on mil-spec and most billet AR-15 uppers without fitment issues. SPECIFICATIONS: Bore Diameter: .750 Profile: Low Profile Material: Steel Finish: Black Nitride Adjustment: Set Screw Gas Port Regulation Made in the USA See all of our AR15s and AR15 parts here.