Top Scope Mount Rail for Ruger SR22 RDS Rifle, 25 Slots, 10"/ 255 mm Length, TufForce RG25A Tufforce unique designed scope Mount/ top rail for Ruger SR-22, 25 slotes Full length 9.5"/ 250mm, 25 slots, Same profile lever with Receiver 6061-T6 aluminium, black Hard Anodized finish Hollow design and keep same lever with rail of receiver, Lighter 5 screws come with in box to install on hand guard