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CMMG 10RND EXT FN5.7 FITS 20RD MAGS UPC: 852005002028
CMMG
MSRP: $17.95$13.77CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rdCMMG 57AFD1E FiveSeven 5.7mmX28mm 10 Round Mag Extention Black - 5.7 10 Round Mag Extension. The ultimate upgrade to your 5.7x28 pistol. Simply remove floor plate, inspect factory mag opening for...MSRP: $17.95$13.77