Leapers UTG Universal dovetail to Picatinny rail adaptor, black. Features: - UTG new Gen dovetail to Picatinny/Weaver cantilever rail adaptor - 5.7" Picatinny top rail with 14 slots to provide flexible eye relief adjustment and mounting flexibility of various optics - fits 9mm - 11mm airgun/shotgun dovetail rails - comes with 4 high strength screws and adjustable recoil resistant stop pins which ensures solid locking and zero holding and is designed to resist bidirectional recoil force - easily slides on and universally fits both flat & rounded dovetail Receivers - precision machined from Aircraft aluminum and finished with a matte black hard coat anodize - saddle height is 0.59". specifications: - material: aluminum - weight: 2.4 oz - length: 5.71 inch - width: 0.84 inch - height: 0.67 inch