what do you mean by "good"? Then does Green mtn provide any barrels on a military contract to anyone anywhere, just curious is all?

I can post a couple of targets with a colt 6720 barrel and a DD barrel. I can post a target of a BO pistol I sold that shot "good". I had a MOA Noveske chromed barrel that shot MOA for 5, "good" means different things to different folks. Good to Formadilosus means 1.5-2.0 for 10 shots at 100 IIRC, good for me means about 1MOA or better for 5 shots, but the DD barrel will do about 1.5 with 10 Federal M193 if I take my time.

Me I would never spend $2200 on a green mtn barreled "jack" carbine, if it was an FN barreled or DD barreled gun I would come closer to thinking about it.

a fool and his money are soon parted...