I have a mossberg 930 similar auto 12g in walnut comes with two barrels one 26" it's ribbed choked and vented and a rifeled 24" slug barrel also ribbed and vented. The gun is also tapped for a scope mount. The gun is in excellent shape with very few rounds through it. If your interested check the reviews on this gun, it's very dependable. http://www.shotgunworld.com/bbs/viewtopic.php?t=98511