Hi Am new to the forum, waiting delivery hopefully soon of an MVP in 223. Did hold off decision as I couldnt make up my mind whether 223 or 308 and missed out on a special price offer. ( should have bought both !). I am a new immigrant to Australia so getting used to the gun laws here. No semi autos, no suppressors ( sigh) My interest in MVP's comes from owning a Remington 7615 P, and using the fact it also has a ar15 mag so I can get a switch barrel in 223 and 300BLK using the same mag. There is a great company called Lumely Arms here in Australia that sell a bracket to convert 7615 to switch barrels. so a pump action, modular switchable carbine using easily acessible mags and in available carbines. Takes most ar15 stocks, pistol grips etc where legal. I still own a JR carbine in 9mm that I bought before emigrating that someone is looking after for me. I was thinking of also getting a pistol carbine by using a 9mm barrel. Then it dawned on me that all those people in the USA who use ar15's with 9mm uppers with a drop in magwell adapter for the ar15 should work in the MVP. They have solved the problem of how to feed my Remington, and with Glock or other mags!. Then I realised I could also have switch barrel, bolt action carbine with the MVP in 223, 300 BLK, and now 9mm using a ar15 magwell adapter. Both Glock and AR15 mags in a bolt action switchable barrel carbine! and a takedown essentially to boot. So, anyone tried pistol cartridges in MVP before?? You could even do 45 acp with the 308 boltface. It was this forum that gave me the idea of the switchable barrels.. Will post this on the mod form but thought I would say Hi with a question.