If you are really interested in that.....RCBS is "usually" good with replacing parts on their old presses. Unless they just don't have them anymore. If that's a 4x4, I seem to recall it not being super popular. I suspect you'll end up not being real satisfied, and it may or may not ever run great. If it was me and you're trying to get into a budget progressive.......I'd find a used Dillon RL450. Dillon will still replace parts on that and honor the warranty, and even if you find a beat to heck one, you can ship it to Dillon and they will 100% refurb it for 89.00. The modern primer system and powder system for the 550 will drop right on. The 450's were some of the most beloved press's ever made, and incredibly precise and accurate. Just my .02. I've seen 450's for as little as 150.00 at yard sales and estate sales...but be prepared to pay ~ 300, but it will likely come with a few other things. Just make sure if you do buy a used one, that's it's got the ram and lower bracket on it. As folks upgrade them to 550's and sell just the frame...which is useless because a new ram cost's the same as a new 550.