So far I like the Freak system on my Phantom, but I wish I had the stainless steel inserts instead of the aluminum ones. I can see the aluminum ones getting dinged up easily if one's not careful with them.
Finding paint to fit the existing barrel on this gun will be tough, unless I let the paint get wet and expand (bore is about 0.691-0.694 ID, just guessing). Even if I could match the paint to this bore, I tend to bring many different guns to use at scenarios, meaning I would have to buy many different brands of paint for all my guns. I'd rather get one paint that fits several of my guns and use inserts or detents on the ones that the paint is too small for. It's cheaper in the long run (as long as I don't buy many more new-to-me guns!).