Rost Martin(R) RM1SBLKOSP10CA is a sub-compact Semi-Auto pistol chambered in 9mm Luger with a 3.6 in. black match grade barrel and a 10+1 capacity. This RM1S CA compliant configuration features a black Nitron steel optic ready serrated slide and a black polymer frame with a Picatinny rail. It includes interchangeable backstraps ambidextrous controls RMR footprint optic compatibility and two 10 round magazines for concealed carry and defensive use.Key Features9mm Luger chambering3.6 in. black match grade barrelBlack Nitron optic ready serrated steel slideRMR footprint optic compatibilityBlack polymer frame with Picatinny railInterchangeable backstrap grip systemAmbidextrous controlsIncludes 2 detachable 10 rd. magazinesRost Martin(R) focuses on producing modern defensive firearms that combine reliability ergonomic design and practical performance features. The company emphasizes user-focused engineering with optics-ready platforms and adaptable controls. Rost Martin pistols are built to provide dependable operation for personal defense and range training applications.