This is the 5 round Size C factory magazine in 6.5x55, .25-06, 7x64, .30-06, 8x57 IS, 8.5x63, 9.3x62, and .270 Win for the Mauser M03 series rifles.
Made from heat treated steel with a black oxide coating this is the standard finish. The Mauser logo is engraved on the base.
A deluxe finish version with stainless frame and base to match premium modes is available special order.