Welcome. I like the P320 X-Compact for a carry size. I carry it when wearing more clothes and carry the P365 when wearing fewer cloths. They complement each other well. I don't know what caliber for the AR pistol you are looking for but my .22LR Smith & Wesson AR M&P 15-22 pistol is a blast to shoot and plink with. It seldom fails to feed a round. I've been happy with it.