I havent sent anything back. Brownells has agreed to replace the brake, no resistance there. They were great. Precision Armament has also offered to replace it. I held on to the brake for just this reason. I am taking it over to my gunsmith today. I will give you guys an update as soon as i know. I dont consider installing a brake to be in home "gunsmithing" its a pretty simple straight forward process. Ive done it many times with no issues. I am certainly no gunsmith but do alot of things on my own with great outcomes. I can't see a scenario to where this could be my fault. whether they see it the same way or not is yet to be determined. guess we'll find out.