Factory new. 

Direct thread 1/2x28, keep it simple stupid. 

Drilled for a pin and weld set up, if that matters anymore, can be permanently attached to a 10.5" barrel for a one stamp shorty. 

   Laser-welded construction
   Light Weight Tubeless Design
   1/2x28 TPI Threads
   3/4" Wrench Flat mounting geometry for easy installation
   Full Auto Rated