[Ibby]

I found one in a box of old hard drives last week. They truly sucked as a magazine. The lips broke off the tops of the mags in pretty much any temperature below freezing, causing all the rounds to try to fit into the breech at once.
Even when we were using them, we'd pick up metal mags whenever we were at US bases since they just leave them lying on the ranges after a day of shooting. You'll do fine with a Canadian loadout using pretty much any regular mags out there. Even the Star locaps look fine after you paint them.