wouldn't it be nice to see glock chamber the 5.7 round in a frame the size of a 21 platform. think of the capacity. the potential for law enforcement to penetrate soft body armor , no need to change holsters and equipment. would make a nice concealed carry caliber, obviously in a smaller package , glock 30 size? if more manufactorers produced more weapons for the caliber the round might be produced more and come down in price a little.