I've used this with Magpul's polymer 20 round .308 AR Mags as well as LWRCI REPRR .308, 20-round Steel magazine as well as DPMS Steel 19-round .308 magazines. PERFECT with all of them! Comes with two stripper clips. Suggest you buy the extra stripper clips. They're only $7 at Optics Planet.
Pros: Works with poly and steel .308 win/NATO 7.62 x 51mm Magazines
Cons: NONE
This review was written in the old system and had content requirements that are different than reviews written today.