Phase 5 Weapon Systems MSMLOKBLK Black Anodized 1.55" The Phase 5 Micro Stop M-LOK (MS-MLOK) is an ultra-lightweight rail attachment that will assist the operator with indexing their support hand while deploying the weapon; as well as keeping the support hand in the same position while firing. The MICRO-MLOK can be mounted on the bottom or either side of any M-LOK compatible rail system in a forward or reverse direction, allowing either a push or pull style grip. Includes- Micro Hand Stop, 5/32" Hex L-wrench, M-LOK T-nut and screw.