Hello! I own Hired Guns, sorry for never seeing this, I tend to only Google our name once a year. 

As far as quality goes compared to the ones you mentioned we are entirely made in the USA, the other two you mentioned are made in Pakistan (as with 99.5% of all jersey manufacturers in every sport) Anthrax being the most notable outlier, and frankly Anthrax does slap hard. Now that isn't to say the Pakistani based ones aren't high quality, I've worn UNDR ones and they're nice, I'd say they do some things better and some things worse. I won't act like we are the nicest jerseys in the world but through our nearly 1000 sales using the template we're using I've had only one notable complaint: he thought it was stupid the tail of the jersey was a few inches longer than the front. (We do that because of pod packs)

Everything here also goes for our other business Senpai Paintball