The Superlative Arms patented Bleed Off Mode gas block offers improved performance and reliability for AR-15, AR-10 and LR-308 platforms. This unique design vents excess gas through the front, instead of restricting it, reducing recoil and wear while enhancing cycling for a smoother and more efficient shooting experience. 0.936 inches x 1 inches direct impingement adjustable gas block Clamp-on 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 Dark DLC gas block coating