[/quote]Jim in Houston wrote:I use pretty much any AR mag. You don't need to spend a fortune for a special mag, nor do you need a special follower in most cases. I find the straight mags (20 rnd) work best with the 450 BM, since the straight wall rounds bind in the curve ones. You should be able to get 7 rounds in a 20 rnd AR mag and 5 in a 10, and 4 in a five - or something like that.
I know this is a long shot (no pun intended), but has anyone tried feeding from a 6.8 magazine? Especially a PRI 6.8 mag...