Barrel Extension Separation!

[1075 tech]

The real point being made here is that the proper technique is to nitride the barrel first, then install, torque and time the extension/alignment pin, afterwards. Since the barrel and the extension are usually 2 separate alloys, their heating/cooling coefficients will differ and the nitriding process will cause them to loosen at times. So this guru-shop must not be as guru-good as supposed. I would strongly consider shopping elsewhere.

I have heard of this before. Improper process in the nitriding procedure.

I posted some time ago regarding a 5.56 barrel that I was having issues with. It ended up sitting in the safe for a couple of years until I finally got around to doing something with it. Using a RR, I went to remove the barrel nut and with very little effort, the barrel spun out of the extension. Barely more than hand tight.