" Lastly, the barrel on this unit is threaded between the front sight and the muzzle. Anyone know what was originally installed there? " My understanding is the barrel was threaded for a device so that wooden practice bullets could be fired, and the bullets were broken up or shredded and practice could be performed without having to have a full range. Several sellers in SGN used to sell the wood projectile ammo.

Everything you now do is something you have chosen to do. Some people don't want to believe that. But if you're over age twenty-one, your life is what you're making of it. To change your life, you need to change your priorities.