Coating hardness per literature in tube container bcg came with. I'm not a qc inspector, gimme a break rost495. I'm not the only buyer who reads specs on gear they purchase. If your really interested their is a tactical edge arms vid where they run a hack saw blade on the darn thing at the shot show I believe. 5th SFG also runs TEA parts now per approved local purchase authorizations.
Last edited by renegade50; 11/30/17.
