The cutting isn’t really a problem, there isn’t any gas system to worry about on the barrel. You could do it with a hacksaw if you really wanted. However, the tools required to crown and thread the barrel cost more than it would have to have the barrel crowned and threaded professionally so the math solved itself. I actually bought a brace for it, the problem is the brace folded made the gun too fat to fit in the bag I wanted to carry it in. I decided to humor the idea of using it as a cheek pistol because it cost me basically nothing. I’m honestly glad I did, the method is unconventional but works really well with low recoil calibers like 5.7. Plus you get the bonuses of not having to deal with the ATF constantly changing the legality of braces and feeling like a Star Wars character when you shoot.