Spare Magazine Carrier For MX-1 With Long Stock Assembly

Keep a backup magazine instantly accessible with the META Rear Spare Magazine Carrier (RSMC) for the MX-1 Long Stock Assembly. This universal friction-fit system mounts securely to your META Stock or Stabilizer and includes 8 precision-engineered shims for perfect compatibility with over 150 magazines, including Glock, Sig Sauer P320/P365, Springfield, HK VP9, CZ, and more. Installation takes less than two minutes using the included hardware — no gunsmithing or permanent modifications required. Built from lightweight yet ultra-durable Mil-Spec fiber-reinforced polymer, the RSMC gives you fast access to an extra magazine without adding bulk or complexity to your setup.