On Ebay now, there is a short 4.5" barrel listed marked with "Match Target" and the "Bullseye" target. Very short with a see-through bottom under the barrel. Never seen this item before. Only seen the 6&5/8" barrels on 1st Series. Has front sight mounted. Is this a factory Colt barrel??? Asked seller for any other barrel markings - awaiting response. Only really interested in factory barrels and not in some homemade cut-down barrel with moved front sight. What say ye Woodsman gurus???