DealFits: AR 10 MAGPUL PMAG LR/SR GEN M3 .308 / 7.62x51mm. MAG|Couplers use a series of teeth on both sides of the coupler to hold the coupler tight to the magazine body. They are designed to be very tight when installed and may require some force when being slid onto the magazine body. This fit ensures a solid pair of coupled magazines supporting the recoil of the platform. from RJK Ventures (Product AR10_MagCoupler) |