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 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 AR15 handguard. Specifications for Bowden Tactical Cornerstone M-LOK Handguard: Manufacturer: Bowden Tactical Color: Black Finish: Hardcoat Anodized Fabric/Material: 6061-T6 Aluminum Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Handguard Type: Free-Float Gas System Length: Rifle Length Mount Type: M-LOK Package Contents: Bowden Tactical Cornerstone M-LOK Handguard Mounting instructions Hardware Barrel Nut
3 reviews for Bowden Tactical Cornerstone M-LOK Handguard
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Egor Phutski –
Fast curtious quality transaction. Fit like a glove. Excellent price.
Buster –
Absolutely love OP and their service with amazing prices, customer service, and fast delivery. With that said, this concern has absolutnothing to do with OP. I semi-recently purchased the 13" Cornestone Competition Rail. The finish and machining are high quality. It is exactly what I've been looking for. Unfortunately, I am unable to recommend this product as it walks away from the receiver (even after the 3 bolts are tightened to specifications). After 60 to 80 rounds of 62gr 5.56, the handguard routinely walks/slides away from the receiver approximately 1.5 to 2 milimeters. Very disappointed. Unable to secure enough to prevent the movement. On a semi-positive note, it does not rotate or shift side to side…remains perfectly alligned.
Buster –
I spoke with Rick at Bowden Tactical. Excellent customer service and resolved the issue of the 13" competition handguard separating (walking/sliding) away from the receiver while shooting. I absolutely love this handguard.