![Mossberg 590m Mag-fed 12ga - 18.5" 10rd 2.75" Blued/syn Mossberg 590m Mag-fed 12ga - 18.5" 10rd 2.75" Blued/syn](https://cdn11.bigcommerce.com/s-c6aiidxwtg/images/stencil/300x300/products/10837/16136/ZAG50205__24178.1731978255.jpg?c=1)
The world�s first production double-stack 12GA shotgun magazine offers a shorter magazine length vs. capacity than competitor�s single-stack designs providing better swing balance and control. - Magazine construction highlights: Hardened steel feed lips over-molded steel shell ramps easy-grip external molded design proprietary self-lubricating polymer magazine body material heavy-duty ASTM-A-228 music wire magazine spring removable floor plate for easy cleaning and a tough black oxide finish on steel components. - For shooting flexibility 590M magazines are available in 5 10 15 and 20-Round and are for use with 2.75� shotshells.