you can still put on a 3.5 oz tank. all you have to do is take off the 12 gram changer. the .45 trigger is a lot mroe comfy than the m16 grip frame, atleast i've heard,..from a ton of people. i definitly recomend getting the .45. the phantom is already really good stock. detent rings are great with the big bore stock barrel or get a new barrel.
^yup...also with the 45 grips you can use aftermarket grips such as stickys or hybrids...i would also recomend a trigger shoe(makes trigger wider) and possibly a ghost ring even tho i dont like them...ghost ring is like a small half tube on top of your feed tube that allows you to aim better by giving you a smaller fov(i dont like them tho)
"Don't do anything stupid? Who the hell is he talking to? A bunch of morons who volunteered to jump out of a perfectly good airplane. Can you get any more stupid than that?" - Alex Penkala, Band Of Brothers