300BlkTalk

PNW17 wrote: ↑Wed May 01, 2019 7:18 pm Got the short adapter for the can that cuts the length down a bit more. The alternate piston gas block is on the mill now being bored out.

What is total length and length of suppressor?

dellet wrote: ↑Thu May 02, 2019 11:21 am

PNW17 wrote: ↑Wed May 01, 2019 7:18 pm Got the short adapter for the can that cuts the length down a bit more. The alternate piston gas block is on the mill now being bored out.

What is total length and length of suppressor?

4.4” bbl + 8” can = 12.4”

Using a boring head to cut barrel pass through on micro piston block.

PNW17 wrote: ↑Thu May 02, 2019 4:06 pm

dellet wrote: ↑Thu May 02, 2019 11:21 am

PNW17 wrote: ↑Wed May 01, 2019 7:18 pm Got the short adapter for the can that cuts the length down a bit more. The alternate piston gas block is on the mill now being bored out.

What is total length and length of suppressor?

4.4” bbl + 8” can = 12.4”

I was wondering about overall length of the whole pistol. Probably should have included collapsed and extended for to make better sense.

dellet wrote: ↑Thu May 02, 2019 11:49 pm

PNW17 wrote: ↑Thu May 02, 2019 4:06 pm

dellet wrote: ↑Thu May 02, 2019 11:21 am
What is total length and length of suppressor?

4.4” bbl + 8” can = 12.4”

I was wondering about overall length of the whole pistol. Probably should have included collapsed and extended for to make better sense.

29.25” extended, 26.5 collapsed”

In an effort to try to cut out recoil I took the jp silent captured spring, cut the spring down by about 4”, removed the buffer and cut a new one out of acetal. Also got a lightened bolt. I will start with no gas and work my up to get it to cycle. We’ll see if it works....

Here is a pic of the blank on the upper for the mini piston project.

PNW17 wrote: ↑Sat May 04, 2019 4:54 pm In an effort to try to cut out recoil I took the jp silent captured spring, cut the spring down by about 4”, removed the buffer and cut a new one out of acetal. Also got a lightened bolt. I will start with no gas and work my up to get it to cycle. We’ll see if it works....

The bolt was riding over the rounds and I was having failures to load. Need to try again with the old bolt

Really cool project.

I wasn't much interested in the micro barrel thing, but this is neat. Especially on that SBR stock.

There are now a couple lowers with integrated folding mechanisms. One of those with a pistol brace on it would be really slick with a kit like this for backpacking/ car use too.

I tried 180 gr Speer jacketed soft points thinking that I could reduce the copper chunks coming through the gas port into the bolt vs. the plated bullets. Fouling in the bolt is less but I ended up with chunks of the jacket in the suppressor. Do I just have crappy bullets or is the short barrel/gas port causing the jacket to separate?