Yankee Hill Machine YHM-9383 Low Profile Gas Block .750 Bore Set Screw 4140 Steel Black Oxide

The Yankee Hill Machine YHM-9383 is a low-profile gas block assembly purpose-built for AR-15 and LR-308 platforms with a .750" diameter barrel. Manufactured from high-quality 4140 steel and finished with a mil-spec black oxide (phosphate) coating, this gas block delivers the rugged durability and corrosion resistance expected of a duty-grade component.

The set-screw mounting design clamps securely to the barrel without the need for a proprietary lockup system, and a single pair of set screws locks the block in place. The YHM-9383 is compatible with standard AR-15 medium, M4-profile, and HBAR barrels and can also replace an existing front sight to provide clearance for a free-float or rifle-length forearm.

At just 0.95" long and weighing only 1.6 oz, the YHM-9383 keeps your build lightweight and snag-free. A 0.125" gas port matches standard AR-15 barrel specifications. Proudly made in the USA, this gas block carries YHM's reputation for producing quality components at an accessible price point.