Meta Tactical M-Lok Picatinny Accessory Rails Kit Black. META Tactical Picatinny rails are made from glass reinforced rugged nylon polymer and are incredibly lightweight yet durable. Each Picatinny Rail kit includes 5 rail sections: 5? left and right side rails 3.25? left and right side rails and a 5.5? bottom rail. Mounting hardware and Allen key are also included. Compatible with All M-LOK products but specifically designed to seamlessly fit your APEX Bullpup Conversion Kit Specifications for Meta Tactical M-Lok Picatinny Accessory Rails Kit: Manufacturer: Meta Tactical Color: Black Finish: Nitride Fabric/Material: Chrome Moly Gun Rail: Picatinny Hand: Ambidextrous Length: 6 in Width: 1.5 in Height: 3 in Weight: 2 lb Features of Meta Tactical M-Lok Picatinny Accessory Rails Kit Rugged glass fiber reinforced polymer construction Seamless integration with M-LOK compatible APEX Series products Package Contents: Meta Tactical M-Lok Picatinny Accessory Rails Kit M-LOK Hardware (9 Screws/ 9 Nuts) Allen Key For Installation Meta Tactical MTA-ACC-RAILS: M-Lok Picatinny Accessory Rails Kit Black