512bpg

when considering length, would you take into account the muzzle brake? now deciding whether to cut a 24" bull barrel down to 18 or 20 since the brake is going to add another couple inches

just the topic ive been researching... I currently have a dpms lr 308 with the 24" bull barrel. It has worked flawlessly from day 1 so of course I want to mod it already Wanting to cut the barrel down to 18" if possible (20 if its not a smart idea) and have been seeking out info on whether this will mess up the cycling since it has the rifle gas system on it and 18 would bring it down to just past the has block. I do plan to put a brake on it but want it to work without one for a while first. Can I just do a cut and crown on it or are the ports going to need to be resized for it to work properly? It currently has the A2 stock and buffer that came with it and i'd like to put the PRS on it eventually but cant think of any other mods i have in mind that would affect cycling. Thanks in advance for any answers as I try to sort this out before getting the barrel hacked!