Ultimate Arms Gear Tactical Ruger 10/22 10 22 10-22 Rifle Receiver Scope Mount With 2-7x32 Rifle Duplex Sniper Reticle Scope With Included 7/8" Weaver-Picatinny Scope Rings+ See Through Lens Covers+Lens Cleaning Kit MAGNIFICATION-2x-7x ADJUSTABLE ; OBJECTIVE DIAMETER- 32mm, TUBE DIAMETER. : 1" FIELD OF VIEW @ 100 YRS ( FEET ) : 36.6-13.6 /// CLICK VALUE@100 YARDS-1/4" EYE RELIEF ( INCH ) : 2.56-2.95 ; EXIT PUPIL ( MM ) : 13.3-4.4 Ruger 10/22 lowprofile scope mount fits the existing receiver holes and provides a base for 7/8" Weaver Picatinny Scopes-Rings-Sight-Light Laser Black Anodized Aircraft Aluminum Finish - Mounting Hardware Included