I have a 21" Demon barrel, which only comes close to this barrel's accuracy, if you take off the attachment.
I have a hard to find Armson pump marker, with a 12oz CO2 tank
Extremely accurate, and pretty quiet.
It chops balls a very little bit more than average barrels.
This Armson steakth barrel is extremely accurrate. In 10 shots at a bird house from 25 yards away (aiming for the 2" in diameter hole) they all hit in a 4 inch radius, one of which I landed in the birdhouhose hole. I was using recreation levelpaint while testing. This barrel does seem to chop balls a little bit more than normal barrels.
I would seriosly recomend this barrel for players looking for really good accuracy.