WALTHER PPQ M2 0.00000000186264514923095703125-INCH REVIEW NO FURTHER A MYSTERY

It was probably a Friday afternoon assembly. Almost everything else with regard to the guns claims top quality. Ideally Walther will make it what it ought to be.This can not hurt my 60 year outdated barrel now, will it? I absolutely sure don't want to damage my riflings! I don't Assume it's going to, but be sure to excuse and realize my paranoia.Ap