Three 6" Picatinny Rails Each with 13 Numbered Slots
2 Screw Holes on Each Rail
Complete with 7 Hex Screws and Allen Wrench
Install tools are included . Easy to hook up
20mm standard RIS weaver base ready to add on laser/flashlight/foregrip

Color - Matte black
Weight - 208g (With box)
Rail length - 154mm
Nut to nut distance - 85mm
Rail type - 20mm