Received my GG&G charging handlethe other day. Installs with a definitive click and has ample clearance the backside of the charging handle and the receiver so there is positively no contact nor chance of marring the receiver. I don't understand why others FFT and many more charge $70+ for the handle? Excellent value for the money and I would definitely recommend it to other M4/M1014 owners. Positive feel and the knurling isn't overly aggressive. Great job GG&G!!!