Troy Industries Low Profile Gas Block .750" Steel Black

The Troy Industries Low Profile Gas Block is a drop-in gas system component built for AR-15, M4, and M16 platform rifles with a .750" diameter gas seat. Its low-profile footprint allows free-float handguards and rail systems to sit cleanly over the gas block without interference, making it a go-to upgrade or replacement for builders and armorers working on a carbine or rifle-length gas system.

Machined from 4140 pre-hardened steel and finished in a matte black manganese phosphate coating, this gas block is built to handle sustained firing schedules and resist wear at the gas port interface. It fits all M4 carbines and M16A2, A3, and A4 rifles that use a standard .750" gas seat diameter, and serves as a direct replacement for the factory A2 front sight base gas block on rifles being converted to a free-float handguard setup.

Designed as a straightforward drop-in part, the Troy Low Profile Gas Block installs on barrels with a .750" gas seat and secures with standard set screws, giving armorers and home builders a reliable, low-profile gas block that pairs cleanly with drop-in quad rails and other free-float handguard systems.