u/Brilliant-Flower-271

So you know how some pens have a shirt clip that is a separate piece of metal that clamps on to the pen shaft using a sort of sea shaped piece of metal? (🖊 ) i'm gonna put that on the shaft of the bolt, and it'll slide back and forth, just enough to kick the cartridge out when it strikes the bolt stop.

I'm gonna weld a metal pin to the underside of a dust cover to function as a bolt carrier group, I had to cut the extractor in half and remove about a quarter inch of material to work with the shortened bolt.

Hard to show using a GIF, but the third photo is where it catches.

Still need to cut a slot through the rear bridge to let the bolt operating pin to slide through. The bolt operating pin will be welded to the underside of a modified dust cover. The piston will be on the side of the rifle welded to the dust cover to function as the bolt carrier.

The piece of shiny aluminum represents a slot that will be cut.

i'm building it like a lewis gun

Starting with a shortened bolt i'm going to convert it to hammer fired semiautomatic, Instead of attaching a lug to the bolt and using a slot cut into a dust cover to open and close the bolt while doing something complex to get the extractor to function. A spiraling groove cut into the bolt in a metal pin welded to the underside of a dust cover. There will be a hole in that metal pin for the firing pin to slide in and out of, and when the operating pin slides backward, it'll push the firing pin away from the bolt face, preventing a cartridge from firing out a battery. Im also going to attach a short length of metal tube to the back of the reciver to fully enclose the shortened bolt thus allowing for the stock to remain unmodified. It won't need a pistol grip to function like other conversions

Shortened the extractor by about a quarter inch.

https://chaszel.com/product/9mm-threaded-barrel/

Part of the description says "Barrel Liner" but the title says its a barrel. That part seems to be instructions and I dont know if it is just a blanket description put on all the listings. I need to know if this is a complete barrel that a bullet can go through without exploding.

(last picture is basically what I need but preferably a 10 inch.)

(it shoots just fine)