New old stock in pristine condition. Colt 14.5″ government profile M4 barrel. July 2004 production date. M4 feedramps with F marked front sight base. Fully chrome lined 1/7 twist, 5.56 chamber.
Barrel has never been installed into a receiver.
Correct era of barrel for an Afghanistan/Iraq War early to mid 2000s era clone build or restoration.
This is from my personal collection. I was going to keep it for a project but it never materialized. 100% collector grade level part.