ATF approved 10.5″ blank fire barrel is modeled after the WWII Thompson Sub-Machine gun barrel. A short barrel permit is NOT REQUIRED for installation. The ATF approval letter should remain with the gun. 45 ACP SMG Blanks are recommended for use.
Competent Gunsmith Installation is recommended.
- Manufacturer: Howell
- Finish: Blue Steel
- Compatible Gun Models: Thompson M1, M1A1
Includes: 10.5″ blank fire barrel, front sight, 3 restrictor screws (.187,.201, .213) roll pin, 1/8″ drill, Loctite, ATF blank fire barrel approval letter