The UTG AR-15 micro gas block is a low-profile .750" set-screw gas block for direct-impingement AR-15 barrels, sized to fit under most free-float handguards.

Features:

• .750" inner diameter
• Steel construction with manganese phosphate finish
• Serrated self-locking set screws
• Low profile for free-float handguard clearance
• Includes gas tube roll pin and set screws

Fits AR-15 barrels with a .750" gas seat running a direct-impingement system. Set-screw retention; .750" only.