Bowden Tactical J1355315C Cornerstone Competition Handgaurd 15" M-LOK with Competition Top, Hard Coat Black Anodized Aluminum, Pre-Heated 4140 Steel Barrel Nut for AR-Platform, Full Flat Top

A 1.3 inch I.D. will accommodate most low-profile gas blocks. Some interference with clamp-on style low profile gas blocks is possible. MLok slots at the 3, 6 and 9 positions are manufactured to MAGPUL standards. This ensures proper fitment with any MAGPUL certified accessories. Every AR10 & AR15 Cornerstone handguard comes with a pre-heat treated, 2 inch length 4140 steel barrel nut. This ensures rigid, rock-solid accessory mounting. The barrel nut has been nitrided, not phosphated. Mounting instructions and hardware are included with every AR10 & AR15 handguard.