Bernard T-Gun BTB Tregaskiss Tough Gun style replacement Mig Guns & Consumable Parts. Masterweld parts are Interchangeable with Standard, Non Patented, Tregaskiss style parts. Bernard, Tregaskiss style replacement guns; available with Direct Wire feeder connections for Euro, Miller, Hobart, Lincoln, Panasonic or Tweco. Built with the finest quality copper cables, durable handles and OEM quality consumables. Bernard BTB - Tregaskiss style replacement Mig welding guns are Ready to Weld, made in the USA, and meet or exceed OEM standards and specifications.