Use this UTG Picatinny rail set for mounting attachments to your rifle. These rail sections are 6 inches long and feature 13 numbered slots for index points to consistently reattach your accessories. The rails incorporate 2 screw holes on each piece for secure mounting to your firearm. The set comes complete with 8 hex screws and an Allen wrench. Three 6" Picatinny Rails Each with 13 Numbered Slots