https://www.bzpaintball.co.uk/blog/what-you-need-to-know-about-paintball-barrels/
BZSammi Active Member Jan 29, 2016 164 16 38 31 Apr 5, 2017 #1 https://www.bzpaintball.co.uk/blog/what-you-need-to-know-about-paintball-barrels/