Troy 2" Gas Block

The Troy 2" Gas Block is a low-profile gas tube cover machined from 4140 pre-hardened steel and finished with MIL-STD manganese phosphate coating. Designed to conceal the mounting area beneath a fixed-sight gas block and hide taper pin holes, this component provides a clean, finished appearance on the upper receiver while maintaining durability in field conditions.

The 4140 pre-hardened steel construction offers corrosion resistance and structural integrity under operating pressure and temperature cycles. The manganese phosphate finish—a military-standard treatment applied to critical firearms components—provides enhanced wear resistance and a matte, non-reflective surface. At 2 inches in length, this gas block is specifically engineered to mate with standard AR-pattern gas tubes and sits low on the barrel to avoid interference with handguard mounting and accessory rails. The gas tube roll pin is not included, requiring separate sourcing to complete the installation.

This component is essential for builders and armors working with AR-15 and AR-10 platforms who prioritize authentic military-spec aesthetics and protective finish quality. The low-profile design works on barrels with fixed front sights or on builds where sight posts are mounted separately, making it a versatile choice for patrol carbines, precision builds, and service rifle configurations where tube coverage and taper hole concealment are priorities.

Troy has long been recognized for machining precision and mil-spec finishing standards in the AR accessory market. This gas block exemplifies that commitment—a straightforward component built to exacting standards for integrators and shooters who demand reliability and proper fit without compromise.