Uzi build help

[Ziggy91]

Hey everybody,

I "accidentally" showed my boss that you can build firearms such as FALs and AKs through parts kits, and last week he decided that he wants me to build him an Uzi. I work at a CNC machine shop so this doesn't seem like an extreme challenge, but I wanted to know our limitations on parts modification and fabrication since we are just a machine shop licensed for government, medical, and any other production... but not firearms.

I already bought a "Deluxe" kit from RTG, a receiver flat from a company who's name escapes me, and a 10.5" barrel on the way from. I had a fellow machinist tell me that he cannot bend the flat because of mechanical limitations on his press, so what should I be looking for? Are there any calgunners in the Bay Area that can help me bend this flat?

I'm aware of the flow charts and 922r. I've never built anything other than an AR, but looking at these parts, and also online at "Uzi Build" threads on varous forums makes it look simple.

As always, any help is appreciated.

[nicoroshi]

" he decided that he wants me to build him an Uzi. "
Are you an 07 FFL manufacturer?

If not I highly recommend NOT committing a felony by building a gun for someone other than yourself.

Now that is out of the way.
I didn't bother with a flat for my uzi build. I bought a repair section from GunBroker for $90, and re-welded the front, and rear stubs from my kit into it.
From there I needed to weld in a blocking bar so the receiver could only accept a semi auto bolt, and also weld in a small plate into the grip assembly to keep the selector from being able to go into the FA position.
Had to purchase a semi auto bolt/striker, and weld kit along with a barrel.
Flipped the screws on the solid wood stock, and welded the stock plate to the bottom of the receiver.
Installed bullet button grip.
Created a press fit muzzle extension for my 10.5" barrel, and blind pinned, and welded into place to bring the OAL of the barrel to over 16"
Now I have a carbine in .45ACP with a barrel longer than 16", and OAL longer than 30 with a fixed 10 round magazine, and enough US made parts to be compliant with 922(r) (also replaced sear with US made semi auto one).


Another option is getting a NDS receiver, and installing the rest of the welded in, and Semi auto parts to complete the build.

The flats would require a special fixture to bend up since the middle, and back end are square but the front is rounded. I did see on the web someone who machined his own jig to bend up the flat but am unaware of anyone that commercially produces them.

That's all I got.

[SLO1911Fan]

Nodak used to make a 100% receiver for them that would let you get around the commission of a felony by building a gun for someone else. They don't carry them anymore, but if you do to their website they'll tell you who does. That's the process I would take, and actually am taking. My future father in law wants one, so I'm gathering the parts to build it.

[SOAR79]

^^^ listen to them, don't build it for your boss. I'm sure you can assist him, but it has to be him doing the building

[Ziggy91]

Assistance only... CHECK.
I should mention that all of the parts purchased so far were through his credit card, billed and delivered with his name. I'm not a big fan of these things, just wanted to help in the first place since he is the superior power here, but I have more knowledge on firearms and the legaliy of them.

Ok, so finding a receiver and having it shipped to an FFL for transfer and payment by him is a better solution?

Also, he wants a pistol pattern because he hates the long barrel look... Since the barrel is on the way already what would we have to keep in mind to keep this legal, aside what I've read on the charts?

[Cannon-Arms]

" he decided that he wants me to build him an Uzi. "
Are you an 07 FFL manufacturer?

If not I highly recommend NOT committing a felony by building a gun for someone other than yourself.

Now that is out of the way.
I didn't bother with a flat for my uzi build. I bought a repair section from GunBroker for $90, and re-welded the front, and rear stubs from my kit into it.
From there I needed to weld in a blocking bar so the receiver could only accept a semi auto bolt, and also weld in a small plate into the grip assembly to keep the selector from being able to go into the FA position.
Had to purchase a semi auto bolt/striker, and weld kit along with a barrel.
Flipped the screws on the solid wood stock, and welded the stock plate to the bottom of the receiver.
Installed bullet button grip.
Created a press fit muzzle extension for my 10.5" barrel, and blind pinned, and welded into place to bring the OAL of the barrel to over 16"
Now I have a carbine in .45ACP with a barrel longer than 16", and OAL longer than 30 with a fixed 10 round magazine, and enough US made parts to be compliant with 922(r) (also replaced sear with US made semi auto one).


Another option is getting a NDS receiver, and installing the rest of the welded in, and Semi auto parts to complete the build.

The flats would require a special fixture to bend up since the middle, and back end are square but the front is rounded. I did see on the web someone who machined his own jig to bend up the flat but am unaware of anyone that commercially produces them.

That's all I got.

.45acp uzi. Does it take grease gun mags? Where'd you get the parts for the. 45acp build.

If ya don't mind me asking.

[Baboosh]

.45acp uzi. Does it take grease gun mags? Where'd you get the parts for the. 45acp build.

If ya don't mind me asking.

They accept grease gun mags with no modification if you buy the correct magazine well/pistol grip.

[Cannon-Arms]

They accept grease gun mags with no modification if you buy the correct magazine well/pistol grip.

And then I can assume, there are semi .45 bolts and barrels is all that is needed from there?

[nicoroshi]

The mags I used are promag (3 US made parts too ).
They are 22 rounders modified to hold only 10 rounds.
Promag also makes 10 round .45 ACP uzi magazines.
Bolt is from D&D so 'Yes' .45 ACP bolts are available already converted to closed bolt semi-auto with striker.
Barrel is from Green Mountain rifle barrel and is a .45 ACP FA profile barrel.
I used the FA front trunnion that was in the parts kit I got but turned down the back of the barrel for the semi-auto bullet guide I got in the weld kit from D&D. (FA, and SA barrels are different profiles on the Uzi).

All that is needed?
Well almost.
Need a semi-auto grip assembly but can convert a FA one with the addition of a thin metal plate you weld in under the sear to stop the selector from being able to go all the way to 'Happy'.
That plate is included in the weld kit.
Also need to weld in a blocking bar in the receiver so that it can only accept a semi-auto bolt.
Sear needs some dremel work to convert to semi-auto only or you can do what I did, and order a semi auto US made sear.
Then the standard 16" minimum barrel for a rifle with 30" minimum OAL (made the quick detach solid stock permanent on mine with a little welding, and tapping of threads to reverse the screws that hold the wood onto the stock plate).
Magazine lock
There is a guy on GB who sells the left side grip panel with one molded into it but it lacks relief to work correctly. I had to cut a square notch above the hinge of the magazine release in the grip panel to provide relief so it would work.
and maximum 10 round magazines in CA.
Very simple design really, and an easy build if you know how to weld.
What amazed me the most was the accuracy out of the 10.5" GM barrel in this platform.
At 50 yards it can put them all in a 5.5" Shoot n c .


Couple words of caution to the OP on building the Uzi as a pistol.
Handgun roster. Uzi is not on the 'approved list' so would have to be born as a single shot with barrel longer than 6", and OAL longer than 10.5" to be exempt from the roster.
The forward hand guard is considered a forward grip which is an issue for a pistol in CA. (Most leave it off when building as a pistol but that looks fugly IMHO). Believe that a magazine lock or fixed magazine pistol would negate this issue but kind of defeats the purpose of making it in pistol configuration IMHO. However it is also possible in order to have the forward grip on an Uzi pistol in CA one would need to make it an AOW . Consult someone (lawyer) who would know this better than I which is acceptable/ applicable in this case.
Believe you may also have to weld shut the hole in the back plate of the receiver that is there to accept either a folding or solid stock. May also have to cut/ remove the lug that holds the front of the stock from the pistol. A pistol with a stock is an NFA item (SBR) which is pretty much 'unobtainium' in CA, and if the hole was present, and you had a stock in your possession you have constructive possession of an SBR (can be charged, and arrested for an SBR even if you never installed the stock on the pistol).
So.....These are the main reasons I built mine as a carbine instead of a pistol.
Far better look, more ergonomic to shoot, and without all the pistol related legal issues.

I am by no means an expert on the laws but this is what my research into it lead me to believe.
Humbly suggest you do the research on your own into what I mentioned above BEFORE you decide how you want to build it.

One last thing on constructive possession.
I had a friend of mine hold onto the FA 9mm bolt that came with the kit for me while I was working on the receiver until I had the blocking bar welded in place.
May be another thing to think about as well.

[Cannon-Arms]

Fantastic! been thinking about these kits.... .45acp uzi puts it over the top for me!

Thanks much.

[morthrane]

Couple words of caution to the OP on building the Uzi as a pistol.
...
The forward hand guard is considered a forward grip which is an issue for a pistol in CA. (Most leave it off when building as a pistol but that looks fugly IMHO). Believe that a magazine lock or fixed magazine pistol would negate this issue but kind of defeats the purpose of making it in pistol configuration IMHO. However it is also possible in order to have the forward grip on an Uzi pistol in CA one would need to make it an AOW . Consult someone (lawyer) who would know this better than I which is acceptable/ applicable in this case.

As always, IANAL, but my understanding is that as long as the weapon is longer than 26" OAL (federal), it will not need registration as an AOW with a forward pistol grip. See Franklin Armory's XO-26; I believe they have a copy of the ATF letter on their website.

Unfortunately, the california law does make it a bit moot, since that forward hand grip would be illegal without a fixed magazine. (Steps 15-16 on the handgun flowchart)

[nicoroshi]

As always, IANAL, but my understanding is that as long as the weapon is longer than 26" OAL (federal), it will not need registration as an AOW with a forward pistol grip. See Franklin Armory's XO-26; I believe they have a copy of the ATF letter on their website.

Unfortunately, the california law does make it a bit moot, since that forward hand grip would be illegal without a fixed magazine. (Steps 15-16 on the handgun flowchart)

In CA>>>>
Centerfire semi-auto OAL requirement is 30".
Rimfire semi-auto OAL requirement is 26".
California measures OAL in shortest condition in which it can be fired (See case law 'People V. Rooney').
Please do NOT create a semi- auto centerfire rifle in CA with an OAL shorter than 30".
I also believe that any pistol with a fixed magazine would still need to be registered as an AOW to have a vertical forward grip. The standard Uzi grip does not meet this definition but thought it was worth mentioning since vertical forward grips are available for the Uzi.