The UTG AR-15 Micro Gas Block is a low-profile .750" set-screw gas block for direct-impingement AR-15 barrels with a .750" gas seat. It is small enough to fit under most free-float handguards, so it suits rifle builds and handguard upgrades where a standard front sight base or full-size block will not clear.
The block is machined from steel for a close fit on the barrel at the gas port and finished in manganese phosphate. Serrated self-locking set screws hold it in position, and the gas tube roll pin and set screws come in the package.
Features:
Fit check: measure your barrel at the gas seat before you order. This block is .750" only and will not fit .625" or .936" barrels. Align the block's gas port with the barrel's gas port before tightening the set screws, and verify alignment before you fire the rifle. A misaligned block will short-stroke the rifle. Many builders dimple the barrel under the set screws for extra retention. Function-check the rifle once the gas system is installed.
