Bowden Tactical AR-Chitec Handstop Made of 6061-T6 Aluminum with Black Hardcoat Anodized Finish for M-Lok Rail Our AR15 Direct Mount MLok Micro Hand Stop is American-made. American sourced 6061 aluminum. Hard Coat Black anodized finish. Perfect application for AR pistols. Reversible-use in either direction. Prevents your hand from entering the blast zone on shorter barrels. No additional Picatinny section required for direct mount. Slim, lightweight design. 5/8 wide; 1 tall; 1 long. Includes hardware for mounting.