Warne 1-Piece Picatinny-Style 10 MOA Scope Base For Ruger 10/22 Md: A1022M Warne Ruger 10/22 One Piece Base - 10MOA has a full width and depth recoil slots to provide maximum bearing surface for recoil key engagement. The base securely mount to the firearm with Torx-style T-15 socket cap screws, 25 in./lb. of torque is recommended. This one piece tactical scope base is constructed of steel and includes mounting hardware.|