Thompson M1A1 Barrel, 10.5", .45 ACP, Blued *NEW*

US Manufactured Thompson M1 / M1A1 SMG Barrel, 10.5" long, .45 ACP, blued, *NEW*.

Sold Individually.

These are great upgrade barrels for your M1 or  M1A1 Thompson!
10 1/2" long barrel, 1:16 twist, button rifled, 4140 steel that has been stress relieved.
These are air gauged and are chambered per the original full auto specifications.
Muzzle OD .750 unthreaded, for proper fit of the M1 Thompson front sight (not included).
Breech end is threaded per the original factory specs.
Manufactured by Green Mountain Rifle Barrel (GMRB) Vermont.

No accessories included.

NOTE: Prior to installing this length of barrel into a rifle a NFA Form 1 must be completed and returned approved.
A 10.5 Inch length barrel installed into a shoulder fired firearm is a "Short Barreled Rifle" under the NFA. 

Parts must be inspected and tested by qualified and competent gunsmiths or armorers before use in a firearm.
Not all firearm parts are interchangeable; use of new parts without proper knowledge could cause a firearm to malfunction and cause property damage, injury or death.