BigGameHunter
Regular
I have shot only a box of shells through and dry fired my M4 a good amount of times and I notice that the finish on the bolt is wearing off pretty quick is this normal? I imagine it is as it is not binding as it is rather smooth operating. In the beginning it was rather stiff but since if wore a bit it is smoother. Do I just worry too much? BTW it is well lubed with either Motor Oil, Gun Oil, Lawson Protectant or Silicone Lube. Thanks
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