So, I was browsing at a gun store today and noticed there were two lengths of 10-round mags for the 15-22 rifle, a short one and another that looked as if it might have held 25 rounds. But they were both 10-rounders. Any reason to pick one over the other? I was thinking the "longy" 10-rounder might be easily convertible to a 25-rounder...is that a realistic possibility?