REXUS UltraBlok Set-Screw AR15 Gas Block

Finely machined in all critical dimensions, yet simple and rugged, our UltraBlok Set-Screw gas block is sized for .750 gas block journals and attaches to your barrel with two 10-32 x 3/16″ cup-point set-screws (included) using a 3/32 hex tool. Stylish cut-outs shave all-important weight and the 4140 steel is richly black nitrided for all-weather durability. Low-profile and 1.0″ inch length are designed to fit under free-float handguards. For dimpling purposes, the two set-screw holes are spaced .420 from each other. Weight: 1.5 oz.

When used with our REXUS brand barrels which have our innovative DPDS (Dog-Point Dimple System), request one of the set screws be replaced with one of our extended-tip dog-point set screws.