M-LOK® Index Stop

Finding space for hand stops on heavily populated handguards can be difficult. Weapon lights, remote pressure switches, and laser designators often leave little room for traditional forward grips, forcing shooters to compromise their support-hand position. The Magpul M-LOK® Index Stop (MAG1568) provides a streamlined indexing solution that uses just half (0.5) of an M-LOK slot. Designed to give your index finger a tactile reference point, this minimalist stop helps establish a consistent grip every time you present your rifle. It prevents your support hand from drifting too far forward while occupying almost zero functional space on your rail. Key Features Half-Slot Footprint: Consumes only half of an M-LOK slot, leaving plenty of space for light mounts, tape switches, and other front-end accessories. Textured Index Surface: Features a ridged surface profile that gives the support-hand index finger immediate tactile feedback. Ambidextrous Design: Completely symmetrical construction allows left- and right-handed shooters to mount it on either side or the bottom rail without modification. High-Strength Polymer: Molded from Magpul's proprietary high-strength polymer and paired with 4140 chromoly steel hardware featuring a mil-spec manganese phosphate finish. Low-Profile Integration: Matches the protrusion profile of Magpul Type 2 M-LOK Rail Covers for seamless handguard integration. Technical Highlights Brand: Magpul Material: Proprietary Magpul reinforced polymer Hardware: 4140 chromoly steel with mil-spec manganese phosphate finish Weight: 0.35 oz. (including mounting hardware) Attachment Interface: 0.5 M-LOK Slot Compatibility: Engineered exclusively for octagonal aluminum M-LOK handguards. Not compatible with polymer M-LOK handguards or wide-profile forends. Country of Origin: Made in USA Applications Perfect for compact carbines, short-barreled setups, cluttered handguards, competitive shooting platforms, and airsoft builds where rail space is tight and lightweight consistency is priority. FAQ Q: How much space does the MAG1568 require on an M-LOK rail? A: It installs using half (0.5) of a single M-LOK slot. Q: Is the Magpul M-LOK Index Stop compatible with polymer MOE handguards? A: No. Magpul states this product is strictly compatible with octagonal aluminum M-LOK handguards.