Well here's what the exact problem is... and I guess it may be the mags, but...
I "cock" the charging handle, and use the bolt release and all that stuff etc. etc. It loads the first round from the mag then fires fine, but when I go for the second shot, either the next bullet didn't load, so it just clicks, or the bolt has stopped just behind the mag and the bullet isn't catching to load.
The mags I were using were Thermolds, Center USGI, and Colt (8 rd.) Might it be the followers? They're the black kind.
Thanks.
--REALM