AR15/M16/ZM4 surefire 60 round, high capacity magazine, 5.56 caliber
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M4.2-1.41 (#8) Screw Size Locking Thread. Panel Range:.5mm-20.mm (.020 Inch -0.79 Inch) Ctr of Hole to Edge:10mm (25-64 Inch) GM | Push Type Retainer | Auto Body Clips & Fasteners | Wurth USA