The PMAG 20 LR/SR GEN M3 brings many of the M3 improvements to the 20-round 7.62 NATO/.308 Winchester SR-25 magazine form factor and replaces the previous generation MAG243 in the Magpul line.
The 7.62x51 NATO (.308 Winchester) PMAG 20 LR/SR GEN M3 is a lightweight, cost effective, high reliability magazine for SR25/M110 pattern rifles featuring true 20-round capacity, constant-curve body and anti-tilt follower. Designed specifically for military-issue MK11/M110 rifles and mil-spec ammunition (including M118LR), the PMAG 20LR/SR is less than half the weight of standard issue steel magazines and maintains a service life round count approximately equal to the rifle barrel itself.
I've used several of the 20rd mags in the past. Magpul makes a great product. When I found your site with this price..... I just couldn't pass it up.