PTS Fortis Rev II 12" M-Lok Free Float Rail System, Black

Specifications Manufacturer: PTS Product Construction: 6000 Series Aluminum Compatibility: Most Standard 34.5mm airsoft AR15 barrel nut (Not included) Inside Diameter: 1.36 inches Product Dimensions: (L x H) 12 x 2.5 inches Overall Weight: 209 grams Color: Black Features Rugged, lightweight, 12 inch free float rail system Contiguous mil-spec 1913 top rail Magpul M-LOK mounting system to mount M-LOK compatible accessories to the rail rotation limited QD sockets and anti-rotation tabs (fits forged style airsoft upper receivers)