Have read diff reports of people talking about problems with cutting down and threading an annie 64mpr. Does anyone here have first hand knowledge of problems with cutting one down. I will never use the iron sights that can be used on mine and want to cut the barrel back to around 17in and put my thunderbeast on it. Have been scared to do it because of the chatter around about how accuracy will be decreased and won't shoot worth a shit after it is done. It shoots very well right now and I don't want to screw it up. Just seems like if a good smith like gap or beanland, adco or the like were to do the work, there shouldn't be any problems. Most that I have read stated something about the barrel being choked and tighter at the muzzle but I don't know anything about this first hand. Would really appreciate someone chiming in that has first hand knowledge of this being true or not. Thanks, RG.