The Miller MDX 250 EZ-Select MIG gun allows the user to select from up to four weld programs by tapping the gun trigger. The new ergonomic handle features and overmolding for improved grip and a rear swivel strain relief. The gun’s AccuLock consumables with dual-locked, front-loading liner ensures smooth, consistent wire feeding for reliable operation. This particular MIG gun utilizes Miller's MDX Acculock consumables, not Bernard S Lock consumables. Bernard S Lock consumables may be used, however you would need to swap out the diffuser, contact tip, and nozzle.

MDX 250 Features
• (4) LED Trigger Program Select
• AccuLock Consumables
• Pulse Welding Capable (With Pulse Machine)
• 100% Duty Cycle @ 250A CO2 | 60% With Mixed Gas
• .030-.035 Liner Included

Compatible With
• Millermatic 255
• Multimatic 255

Miller AccuLock MDX series consumables are designed to maximize wire feedability and simplify consumables replacement.

AccuLock MDX Features
Superior Feeding - The front-loading liner is centered and locked at both ends of the gun (without the use of set screws) to ensure smooth wire delivery to the contact tip. Plus, error-proof liner trimming ensures accurate replacement every time for reduced burnbacks, birdnests and erratic arc/wire chatter.

Long-Life Consumables - Tapered mating surfaces between the AccuLock contact tip and gas diffuser lock tips in place for maximized electrical conductivity and longer tip life.

Threaded Nozzle - Stays tight during use and cleaning due to the steel retaining ring on the diffuser.