The Snagmag is an innovative magazine holster that discreetly and comfortably allows you to carry an extra magazine with your concealed carry weapon. It can also be worn inside the waistband as well as in your back, front or support side pocket. The floor plate should sit below the top edge of the Snagmag. NOTE: This model is compatible with 17-Round S&W M&P Full 9/40 & Sig Sauer P250, 320.