Rainier Arms barrel extension came loose??
Hey guys, looking for some advice. I have an aero m5 with a 16" Rainier Arms match 7.62x51 barrel, that I built myself and installed a surefire warcomp on with the correct torque. It was fine like that for years. Recently, I decided to switch out the warcomp for a rearden suppressor mount. As I was removing the flash hider that I had torqued to ~30 ft/lbs, the barrel extension came loose. My understanding is that an extension should be torqued from the factory to ~150ft/lbs and it shouldn't be coming loose under these fairly normal circumstances. Also, it seems as though the gas port is indexed at 12 o clock when roughly hand tight, so retorquing the extension would lead to other issues, including head spacing concerns.
So I have a few questions. Is the barrel toast? Buy a new one, because a gun smith fixing it would be more expensive? Should Rainier Arms cover this under warranty because it was torqued incorrectly from the get go? Any insight would be appreciated.