Ea90 wrote:I believe he was responding to the point that rifle cartridges are too big to find in pistol grips.
While it isn't a realworld example, and would probably be a bit cumbersome, I did see this in the PMG group on Flickr the other day:
By Feral Wolf Boy
It's a large handgun that's supposed to accept 5.56x45mm magazines. I'm uncertain as to whether such a weapon would have any practical applications, however.