Colt Confirmed Proof V&P in triangle marking on remaining facet of your barrel among the legs of the entrance sight foundation: If it is a bell condition, that may be suitable for your Colt. And also the gas tube coloration and texture is interesting. See Should the gasoline tube will https://coltcombatunitrailgun4533558.onesmablog.com/what-does-colt-combat-unit-rail-gun-45-mean-71751801