BRN-180S Gen 2.5 shoots minute of barndoor.

I missed the sale at the end of the year for pinned and welded BRN-180s but I found one unopened, new in box, from a 3rd party seller.

I recently got it out to the range and just couldn't get it zeroed. The thing was all over the place, it felt like shooting smoothbore. To troubleshoot I took the vortex scope I had off the Brownells gun and stuck it on my Zastava, and got it zeroed in less than 5 minutes so I know the problem is with the upper.

I messaged Brownells about it through the tool on the website and all I was told was that they don't do any gunsmithing soo... great.

I mean I didn't expect much since I didn't buy it directly from them, but the response was still a little underwhelming. Anyway I guess I'll be getting my tools outta storage and hoping the barrel is just under torqued.

10/10 QC guys.