.......Why? You'd need to change mags every three seconds :P
That and your efficiency would drop through the floor... 15 or so per 12 gram.
A problem I see is that the rate-of-fire would be WAY too high and you'd chop almost every round. If you just cut the sear that controls its semiautomatic-ness it would be like an uncapped full auto.
Nemo Me Impune Lacessit
Nemo Malus Felix