I agree about wrapping the pinky under with the 5 rounder. even though I can squeeze mine on there if I want.
Pierce makes a pinky extension, but it looked really long, but maybe it wouldn't be that bad if you filled/cut it down to just be like a 1/4" longer than the stock mag's baseplate, b/c that's all you really need I bet.
“There are only two things we should fight for. One is the defense of our homes and the other is the Bill of Rights.” -Marine General Smedley Butler.