The PEAK 44 Picatinny Rail (JRail) features an innovative design with a rear cutout that ensures optimal scope placement for hunters and shooters who demand the most from their firearms. The Jrail rear cutout allows for the use of low rings proper eye relief and can accommodate large objective scopes. Constructed from aerospace aluminum the JRail fits picatinny/weaver style rings and is available in 20 MOA. - Torque Specs: 20in/lbs - #8-40 Screws (Model 307 only) - #6-48 Screws (Mark V & Vanguard Models Only) - T10 Tox bit (included)