These are chrome lined Colt 1/12 twist barrels perfect for pistol builds.
they are 4-1/2" and 5-1/2" long. No gas port needed for .22
Threads are 1/2x28and are concentric for use with a suppressor..
They have a .223 chamber and can be used with Ciener kits on your .22 pistol or SBR build.
Bores all look good.
Post "I'll Take it" in this thread if you want one.