I like the block and how you set it up. its pretty clean looking as well. I have been hoarding tome L1A1 blocks from back when they were like $10 for the entire set up I think I 10 so that will allow me to do quite a few calibure and they take the bigger barrel OD. but I got to admitt the youg looks a lor cleaner. How did you rework the internals or did you??
ETA here's a close-up of the gas port - 5 settings for 0-4 with stamps at 0-2-4. That's a piece of a skilsaw blade that I cut out with a dremel cut-off disk and punched the divot to match the holes. Clicks in place very nice Those blades are HARD metal and I had to use my carbide dremel cutter to cut the hole for the screw. I'm going to add a little thumb knob on the other side because it is difficult to switch around with soft point bullet tips