Meta Tactical M-Lok Thumb Rests Black. A great index point to quickly index your weak hand grip. Specifications for Meta Tactical M-Lok Thumb Rests: Manufacturer: Meta Tactical Color: Black Fabric/Material: Polymer Condition: New Mount Type: M-LOK Country of Origin: USA Features of Meta Tactical M-Lok Thumb Rests Compact form factor Double-sided for texture and shape options Package Contents: Meta Tactical M-Lok Thumb Rests 2 x Fastening Nuts 2 x Fastening Screws Meta Tactical MTA-MLOK-TREST: M-Lok Thumb Rests Black