Started this project over the winter two yr's back. It's basically a re-do of my .20 lefty disco carbine. (More on that to come) This go-round I wanted to go as light as possible go up to .22cal and also try a thimble so I could rotate, and remove the barrel with aminimal amount of disassembly.
So here is the 22" long 2024 aluminum tube and some of the long parts.
This is most of the small parts including the Don Cothran valve (which as per Don's instructions is not designed for low pressure use..but..co2 is what I shoot) the lightened P'rod striker with delrin insert 44g, aluminum rva, and the aluminum breech and front and rear barrel band. A note on that last combo. tying down and stabilizing the front of the Crosman 22xx breech's has been done lots of ways, having a barrel band that clamps the barrel down against the lower part of the breech is just something I wanted to try. At this point I also guess you figured out I shoot long gun left shoulder so the bolt is on the left. The Sheridan/Williams peep sight is again something that I salvaged from the last build, along with the M'rod trigger group.
The finished carbine grew a bit from it's last life due to my upping the barrel length to 20" so total length is 36". The weight worked out well, leaving out the gauge, gauge block and going to a lot of aluminum lowered the weight with some co2 loaded