I have a .22Mag, 1-5/8" barrel, no interchangeable cylinder. I think the .22LR cylinder would be worth having for the economical target practice that it would allow. As for the gun, it seldom is out of my pocket. It is so unobtrusive, I usually just keep it in my back pocket regardless of what else I may be carrying. The folding stock makes the gun easier to use without making it too bulky. I hope I never have to go to my NAA as a 1st, 2nd, or even 3rd resort, but I'd rather have it than not.