Fits 600 JR MARK 5 

The resize ring is a wear item located on the depriming station of the MEC 600 Junior reloaders.

After repeated use, this part will wear and break or it may not fully resize hulls down to proper specs.

For best resizing performance, this part should be replaced every so often, depending upon your reloading volume.

Resize Ring - 10 Gauge available part #

10043510