Smart Parts All American Spyder barrel, 2 piece, .692 bore. Bore steps up and measurement of .692 is from initial breech. OD of glue rifled end/tip is .70 or larger. Has dings on end and dried paint in rifling. Bore looks good but because it's two piece it only has about 4.5 inches of actual barrel before it goes into a larger id rifled piece. 12 inches.