Magpul Index Stop Features The Magpul Index Stop gives shooters a consistent safe reference point primarily for the index finger helping the support hand find the same position on the handguard every time the rifle is shouldered. Ridged texture across the front and rear surfaces keeps the hand from sliding forward under recoil improving control during rapid or sustained fire. Its ambidextrous shape works equally well whether the shooter runs the support hand forward or back along the rail. By reducing the tendency to drift the support hand toward the muzzle the Index Stop adds a meaningful safety margin during dynamic handling. Built to the same 1/8 inch protrusion dimensions as Magpul Type 2 M-LOK Rail Covers the Index Stop integrates seamlessly alongside them for a uniform look and feel across the handguard. It is molded from Magpul s proprietary polymer which stands up to repeated handling without cracking or wearing smooth. The Index Stop is compatible specifically with octagonal aluminum M-LOK handguards mounting directly into a single M-LOK slot without tools. For builders wanting a low-profile hand stop that uses minimal rail space the Magpul Index Stop is available for sale at GrabAGun. Magpul Index Stop Specifications Manufacturer: Magpul Model: Index Stop Type: Hand Stop Color: Black Material: Polymer Mount Type: M-LOK Length: 1.30 Weight: 0.50 oz Compatible Hosts: Octagonal Aluminum M-LOK Handguards Available At: GrabAGun