The PMAG 20 LR/SR GEN M3 brings the M3 improvements to the 20 round 7.62 NATO/.308 Winchester SR-25 magazine form factor. All of the GEN M3 improvements are here in the 20 round capacity form factor of our previous design. The PMAG 20 LR/SR GEN M3 will replace the MAG243 in our line.
AR-15, Issue:11, Page:061
Big Book Catalog, Issue:72, Page:069
Sinclair, Issue:5B, Page:247