So I have been watching with interest all of the pistol caliber carbines and AR pistols coming out. I looked at Olympic arms set up for 9mm w/ 6 1/2 inch barrel. Reads as if they are a caliber specific blowback roller set up similar to MP5? I have always wanted a .40 cal AR pistol like this for home defense. Does anyone have experience with them?
I am sure there are opinions galore, but wanted to know specific experience?