Does not require a Picatinny / Weaver-style rail. Allows optic to sit low on the receiver. 4-Post Mounting system includes: TRUGLO TRUTEC Micro, VORTEX Venom, Docter optics, BURRIS Fastfire, EOTech MRDS, Meopta Meosight Series and other compatible mounting systems.
Specifications:

Type
Model	Ruger 10/22 Receiver Mount
Style	Low Profile Receiver Mount
Misc
Finish
Material	Aluminum
Pieces	1
Gun Type
Mount Type	To Receiver/ 4 Post Pattern Footprint
Length
Rings Included
Ring Height
Mount Height