Is there difference between feed throat new and old style model 60?

Answer 1

Yes, the old feedthroats have 3 posts that fit into the old style side plates. The new feedthroats have 4 posts so you have to grind one off if you want it to fit into the old style side plates. The other difference is that the old feedthroats don't have a place for the ejector spring to sit, in fact there was no ejector spring on the old style model 60's, the feedthroat was shaped to eject the spent casing. If you look at the old feedthroats towards the rear one side will stick up higher than the other. The new ones are flat on both sides and the ejector spring sits where the protrusion would be on the old feedthroats. After use the old feedthroats get worn down and have trouble feeding/ejecting which requires replacement. The problem is even if you grind off the extra post on the new style feedthroats to make it fit the old side plates, the old style bolt doesn't clear the new style feedthroats. You have to do some gunsmithing or replace the old bolt with a new bolt to match the new feedthroats. Pain in the butt!! Hope that helps.