Supplemental Impact/Dust Covers for the 5.56×45 PMAG 30 AR/M4 GEN M2 MOE PMAG 20 and EMAG designed to minimize debris intrusion and protect against potential cartridge damage during storage and transit.*NOTE: These will also fit all older pre-GEN M2 variants of AR15/M16 PMAG. This cover will likewise fit the PMAG GEN M3 but being it is of a slightly different design will not adequately seal that magazine against debris intrusion. Made in the USA.