Mike,please explain why this would damage the receiver.I'm not trying to be a wiseass I have seen and heard about your work and hold nothing but 1oo% respect for your craftmanship,I only would like to know since I am very inexperienced in this area and would like to know for the future.I personally have done this a couple times on these receivers and actually I do'nt cycle the bolt but if it just drags a little I put lapping compound on the guide and just push the bolt in and out a few times and it seems to polish the raceway to allow tthe bolt to not drag anymore.