Sentry 12 10.5 Breacher Barrel and Brake: This 12GA chambered 10.5 inch Barrel is machined from 4140 steel with a nitride high durability finish, and barrel extension. This product ships direct to your door! This product is currently for pre-order, shipping ETA is Black Friday 2021 (11/26). All NFA/ATF Rules Apply: You may use this barrel with a shotgun that is a Registered SBS. Possession of this barrel along with a Non-NFA firearm is Prohibited. To convert a Sentry 12 to an SBS, you must complete the form 1 process with the ATF PRIOR TO ASSEMBLY!