I posted this on the BIY forum too as a part of my milling thread, but as I plan a lot of changes to this build, I figured I'd start a separate build thread.

Got to spend a little time in the shop today.  Had these parts waiting around long enough I had to get to them.  As is she ran just fine.  All of the mags worked great. Glock factory G19, G17 & G18, KCI G19 & G18 and the Korean drums.  I have a 4.5" & a 8" barrel I will probably swap to later.  I think I need a 10" rail for the 8" barrel.  Not sure how I want to set up the 4.5" barrel yet.  I don't have a muzzle device for thst one yet.  Obviously I haven't picked an optic either.  I'll probably just go with a primary arms RDS.  

NFA Glock mag 80% billet lower


I had to trim the jig a bit in the magwell area, but heres she's ready to go, from here it's the same as any other 80%'er


Finish pass complete


Last hole


Stick mags.  That's a 11" BA barrel, 12" Chicom rail and a KAK flask can.  Package deal from Schuyler.  


I'm happy with the drums, but they are pretty heavy even when empty.  They are easy to load and so far have functioned flawlessly.  They don't drop free, but I'm not sure you'd want them to.  I imagine they wouldn't take a hit on concrete too well. Oh, and I wish they were 75 rounds.


After the first couple of mags, I pulled it apart to inspect.  Turns out I had some over travel.  Nothing a couple of quarters couldn't fix.  I will probably make a spacer or a new longer buffer, if it's still an issue with the shorter barrel.

Nice!

Nice build.

And thanks for showing the example what over travel looks like.

This is why one of the 1st things I do before test firing is to verify the stroke length.

I recommend a buffer bumper over quarters (quarters are good for determining stroke, but are a bubba fix imho)

Agreed.  I'm sure I will be swapping g the receiver extensign anyway, so for now, it's just a place to store $0.50 !

This is great to see!  I have 2 that I'm going to finish but I am going to get some practice on a couple cheap 80's

Is that the regular or slim flash can?

I have the same setup minus the flash can

I have the PSA NFA pistol lower as it came from them and don't have any overtake.

What's the inside depth of your pistol tube?  The PSA is 7"

Those plates appear to be from TM. Is that correct? Can you speak to how the TM jig fits on that 80? I've been wanting to grab one of those 9mm 80's but have been hesitant due to not knowing if my TM setup will work...

I'll check, but I think it is the slim can


Gonna have to check that one too.  It is not a Phase 5, but a knock off.  I don't even remember where I acquired it.  I have a phase 5, PSA and KAK tubes, I'll check them too for comparison.

Yes, thats a TM jig.  The plates had to be relieved a bit in the magwell area.  I only went about .125 deep, but it was most of the surface that would normally contact the magwell.   The channel in the back I relieved to gain space for using an edge finder to center the lowers, not specific to the 9mm lower.  

ETA:
I made sure not to take it all so it still works with the standard lowers.

The only pic I have of the modded plate

10-4, my first thought/concern is how those mods would affect the fitament of a standard lower. I use a drill press with the top plates & would be milling more standard 80's vs non-standard ones...

And now it's 4.5".  I need to find a rail around 6".  The 4" is way too short for the flashcan and the 7" is just a little too long.

I haven't been able to spend much time in the shop lately. Hopefully I'll be updating thsee build threads soon.

Got to spend a little time in the shop.

Much better!

What short rail is that? Chicom from eBay?

Yup.  4".  I usually stay away from them but I planned to do some machining on this one.  The finish is already crap on these.  Besides that, I couldn't justify the expense for a YHM or the like on what amounts to nothing more than a range toy.

Great thanks. I am in the same boat and appreciate the help.