This Picatinny/Weaver Rail is precision made from aluminium by Recknagel. It comes complete with 4 pre-drilled holes to fit Steyr-Mannlicher M (Classic, Pro Hunter, Export, SM12) rifles (see measurement diagram below), with screws and wrench key to mount to your rifle.
SL – 223rem, 222rem & 5.56mm
L – 308win, 243win & 22-250rem
S – Magnum & WSM calibres
M – 30-06spg, 270win, 25-06 & 6.5x55