I just used the rivet method to make 5 10/30's, once I determined the drill locations they went together easy as all. I have a bullet button fixed mag so I haven't been able to use these unless I am using my Government issue rifle (LOL) and I've still got 6 mags to turn into the armory when I check out LOL so thats all that matters. I think I have more mags packed away, might need to dig them out.
"You see in this world theres two kinds of people my friend. Those with loaded guns, and those who dig... You Dig" Blondie from TGBU