Miller 2200361 AccuLock™ Power Pin Cap (.030–.035 MDX LM2) Ensure precise liner retention and smooth wire feeding with this genuine Miller AccuLock™ power pin cap. Designed for MDX MIG guns using LM2 liners, it securely locks the liner in place for optimal performance with .030–.035" wire. This cap helps reduce burnbacks, birdnesting, and erratic arc starts by maintaining consistent wire alignment. Durable and easy to install, it replaces part number 2200171 and is compatible with select Miller MIG welding systems.