This barrel is already threaded for a Seekins Hit action it just needs to be chambered. it's a 24" MTU with a 7.5 twist, just pick your chamber. You can Click This Link to purchase.
We have a cut and chambered barrel in stock ready to ship chambered in 6 dasher (.105 freebore alpha spec) 26" MTU contour with a 1:7.5 twist. You can Click this Link to purchase.