MEC Reloading Die Kit for Model 600 Jr. Mark 5. Mark 5 handles a variety of calibers including 10 12 16 20 and 28 gauge as well as .410 Bore. This die kit is made from high-quality materials and is manufactured by a reputable company that stands behind its products. This kit converts the MEC 600 Jr. Mark 5 to another gauge and comes with all the parts needed. Included in the kit is a KO bushing deprime and reprime punch resize ring star crimp head cam crimp assembly wad guide rammer tube shell holder drop tube and helpful instructions. Package Contents: MEC Reloading Die Set Kit for Model 600 Jr. Mark 5 MEC 845216: Reloading Die Kit for Model 600 Jr. Mark