In reading the posts it seems several of you have a great deal of knowledge., so I hope you can help me with my question. I have a 27" barrel that is .850 dia. at the muzzle and currently has a holland muzzle brake. At the present time it shoots .25 moa out to 300 yds (as long as I do my job) and .50 beyond that to 750. NOW my question is, I am getting ready to send the gun to the gunsmith to rethread it for a QD flash hider. Will the 27" barrel be too long to hang a suppressor on? will barrel heat and weight of suppressor cause accuracy issues? Should I have it shortened, if so to what length. I really don't want it shortened unless it's going to be a problem. Is anyone else shooting with a long barrel without problems. My suppressor should be in within the next 1-2 months and I want to be ready. any help from you guys would be helpful. THANKS