Ron , How much does that filter assembly weigh? It’s too bad the double tube is no longer available.
RonGreat build and info, following along, you've my interests.That bottom/last photo had my interest, any info on the thumb hole stock?Thanks,Don
I have been toying with a similar idea to yours, only using a shortened M-Rod tube as the bottom tube. I have two extra M-Rod tubes and fill plugs, and M-Rod valve screw to use 4 on each plug on the other end.
Here's the gun mocked up.Replaced the 5K burst disk with a low profile version to get the tank closer to the tube.The foster fitting is temp and will be replaced with a small bracket that will attach to the front grip frame screw.A short pic rail will attach to the bottom of the block.Should get it finished later this week when parts arrive.