Originally Posted by MSims
It has the pinky extension on it also...
If you put a 21 baseplate on a 30 10-round mag, would it not make the mag fit flush, and give you 9 rounds?
I'm not saying it'll work, because I haven't actually tried, but it seems like it would make sense... The extension on the 10-round 30 mag seems to be just like any of the other extensions out there, but it's just shaped to be a pinky extension.