Actually I have an SKS and an AR-9, which is a PCC (pistol caliber carbine). The AR-9 is an absolute blast to shoot. The weapon and a 33 round clip with optics doesn't even come in at 9lbs. Had my PSA AR-9 16 inch barrel for about two weeks and already ran about 300 rounds through it Those who say they are useless should try one before knocking them. At anything less than 100 yards I can acquire a target and send multiple rounds down range before most could get their site window set. Velocity in a longer barrel with a 115 grain fmj or HP will be in the 1300FPS range with about 350 lbs at the muzzle. If you don't think that can take a threat down at 100 yds, you should try being the target for one and see. I have a tac light green laser and Vortex red dot on mine and it is a boat load of fun. Also USPSA has set up a PCC class because these tings are so popular. Personally OP I would go with the AR-9. Lots of options and mine takes Glock mags that I can pretty much get anywhere. Also if you have a 9mm pistol you use the same ammo for both. If you have a Glock 9mm pistol then you use the same ammo and mags.