Featuring Superlative Arms' patented Bleed Off Mode, this direct impingement gas block for the AR-15 platform adjusts gas flow by venting gas from the front of the block, instead of limiting it like standard adjustable gas blocks. This cutting-edge method improves cycling efficiency and reduces wear on the system. 0.625 inches x 1 inches direct impingement adjustable gas block Solid, set screw attachment type Gas adjustment (patented) - features 30 fixed positions located at the front of the block Bleed-off port (patented) - located at the front of the block, designed to vent forward, directing emissions away from the operator DLC gas block coating