The Caldwell Solo 2 gives the shooter everything they need to sight in without taking the kick. The pivoting frame design features an elevation adjustment that gets on target fast, with an offset design to work with detachable magazines, pistol grips, or lever action firearms. The weight tray holds up to 50 lbs. of lead shot or the Caldwell Lead Sled Solo Weight Reservoir to tame heavy recoil. The shock-eliminating rear support protects the shooter's shoulder as well as the firearm and scope from recoil. Take the pain out of sighting in get the Lead Sled Solo 2 and Eliminate The Variables That Make You Miss.