Not trying to sound like a smart ass, but in my experience the best magazine that you can buy is the one that works properly in your M305 regardless of who makes it.
I love the black European made ones that were sold by Corwin Arms. I managed to get one when I bought the rifle and it functioned great and is really nice quality. I bought 2 when Corwin Arms still had them for sale (hopefully they will again in the future), then I bought another at a gun show. For any local Vancouver members, check out the hacs gun show. The guy who has the bench with magwedge products carries these mags
I still have a few of the Euro contract mags available on the website, as well as a few CMI (Checkmate Industries). I think that the CMI are probably some of the best you can get and are made in the US.I love the black European made ones that were sold by Corwin Arms. I managed to get one when I bought the rifle and it functioned great and is really nice quality. I bought 2 when Corwin Arms still had them for sale (hopefully they will again in the future), then I bought another at a gun show. For any local Vancouver members, check out the hacs gun show. The guy who has the bench with magwedge products carries these mags




























