EGW recommends measuring the hole spacing in your receiver to confirm it matches with the dimensions they have published. Picatinny cross slots run the full length of the rail, which gives the shooter flexibility when mounting scope rings and other accessories. EGW one-piece scope mounts are the obvious choice for hunters and tactical shooters alike. This mount is a Picatinny-style base and compatible with Picatinny or Weaver scope rings. EGW machines these in their shop using one of their machining centers. After machining, the mounts are tumbled, sand blasted, and Type III anodized for long lasting durability. Installation: EGW recommends 20 inch lbs of torque and a drip of blue loctite (loctite is sold separately). The entire mount and accessories (from the mounting screws and wrench down to the packaging) are made in the USA.