A 1-1/4" straight octagon barrel blank with a .45 caliber bore rifled with a fast twist, approximately 1 in 16". Blank is 33" long with a 1" stub at the muzzle and a 1-1/4" stub at the breech. They have no threads. This barrel weighs 10.5 pounds. The outside finish has some scattered brown from long storage. These barrels are unmarked as to a mfg. For use with black powder only. We have three examples at this price at the time of listing.