Hard-hitting calibers demand serious magazines. DURAMAG SS SR25 pattern mags are made from a single piece of laser-welded 410 Stainless Steel and protected with T-360- applied coating. This is a magazine that can truly withstand the test of time, and hard use. C Products Defense took great care to design this magazine to be the best option for precision shooters but also for heavy full-auto use. Precision shooters will enjoy a beautiful COAL of 2.87" for their long-range shooting while knowing that their magazine will also feed as fast as needed, every time. The DURAMAG SS magazine is the choice for Military units across the world.