.689 bore..so try to stick with Draxxus paintballs, or anything .689. Evils flew perfect, along with some Midnights.
Super smoother interior. Easy to get a match. Flashy but simple design.
Nothing really, maybe not as good as finish as Boomy but for 40 bucks, nothing.
The barrel has a VERY smooth interior bore. Do not be fooled by its pricetag, if you have seen the CP Pro kits pricetag you will see it sells for a lot of money, so pricing from Custom Products is just weird. The interior finish is very fine quality, and not easy to break up. Almost as good as a Boomys finish, it pretty much matches up with it. As for weight, there nearly is none, its all Aluminum. Get a tight paint to barrel match with this barrel and you'll be shooting very tight patterns. As for range...paint to barrel match. It has the smoothness all you need is to find the paint.
Definately a keeper. If your in need of a new barrel, and want one cheap, id pick one of these up no questions asked. Cant match that pricetag and quality.