Supplemental Impact/Dust Covers for the 5.56x45 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. Made in U.S.A.NOTE: These will also fit all older pre-GEN M2 variants of AR15/M16 PMAG (with Black or Foliage Followers). 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.