Coming soon Titanium Uzi 9mm Sub-Machine Gun bolts

[arch stanton]

I would worry about wear to the receiver due to the additional hardness of the bolt and the speed.
Sure looks cool though. If it would't hurt my Vector Receiver I would be interested. Fast and not having a super heavy bolt chugging around sure would be nice.

The Ti bolt is very close in hardness as your stock 9mm bolt .
Joe

 

[EL DUCE]

There used to be this guy, Pirate something, who posted in this forum and was always bragging about being able to "squeeze singles" out of his M11/9. I told him that there's a special switch on the gun that allows you to do that every time!

Wasn't that Macaholic?

 

[Glockdude1]

I would worry about wear to the receiver due to the additional hardness of the bolt and the speed.
Sure looks cool though. If it would't hurt my Vector Receiver I would be interested. Fast and not having a super heavy bolt chugging around sure would be nice.

If anyone can "wear out" a Uzi receiver, they could easily afford another Uzi.

:surfing

 

[johnnywitt]

If anyone can "wear out" a Uzi receiver, they could easily afford another Uzi.

:surfing

Yeah, I guess you're right. I just wouldn't want tracks grooved in my receiver.

This bolt project sounds interesting. There's a lot of things that could be brought up "to speed" technologically on a design that is 60 years old (more if you include the Czech design that the Uzi was modeled off of). Kinda like the 1911 platform has evolved.
It's known that the choppiness of the FA Uzi could be ameliorated somewhat by speed. Anybody with a set of Blackjack buffers knows this. The other part of the equation would be a lighter mass bolt reciprocating in the receiver.
Smooth and fast-that would be bad ass!

 

[Glockdude1]

Yeah, I guess you're right. I just wouldn't want tracks grooved in my receiver.

This bolt project sounds interesting. There's a lot of things that could be brought up "to speed" technologically on a design that is 60 years old (more if you include the Czech design that the Uzi was modeled off of). Kinda like the 1911 platform has evolved.
It's known that the choppiness of the FA Uzi could be ameliorated somewhat by speed. Anybody with a set of Blackjack buffers knows this. The other part of the equation would be a lighter mass bolt reciprocating in the receiver.
Smooth and fast-that would be bad ass!

I am waiting for a Heavier Mini Uzi bolt to be made. (open bolt)

Mini Uzi, Open Bolt, ROF at 800RPM, that would be sweet.

:surfing

 

[arch stanton]

Yeah, I guess you're right. I just wouldn't want tracks grooved in my receiver.

This bolt project sounds interesting. There's a lot of things that could be brought up "to speed" technologically on a design that is 60 years old (more if you include the Czech design that the Uzi was modeled off of). Kinda like the 1911 platform has evolved.
It's known that the choppiness of the FA Uzi could be ameliorated somewhat by speed. Anybody with a set of Blackjack buffers knows this. The other part of the equation would be a lighter mass bolt reciprocating in the receiver.
Smooth and fast-that would be bad ass!

That is what you are getting smooth and fast

 

[ftldrben]

Haven't run it yet but I'm sure appreciative of getting serial #0001 !!!!!!!!

I don't know if I should even use it. I think I have to buy another!

BTW: I'm in the process of buying into an LGS, that's WHY I haven't shot it yet. Bigger things to come (hopefully).

 

[abundigas]

With the lighter faster bolt, I would guess that you would also be putting less stress on the welds on the receiver. It was my understanding that the use of a buffer with the stock bolt causes more stress on the rear welds. More of a question than a statement.

 

[bac0nfat]

With the lighter faster bolt, I would guess that you would also be putting less stress on the welds on the receiver. It was my understanding that the use of a buffer with the stock bolt causes more stress on the rear welds. More of a question than a statement.

If the ROF is the same between the two, then in my opinion the amount of wear on the receiver will also be the same. Energy = Mass x acceleration. With one method you have more mass that's moving slower. With the other method you have less mass that's moving faster. The result is nominally equal energy between the two.

 

[abundigas]

If the ROF is the same between the two, then in my opinion the amount of wear on the receiver will also be the same. Energy = Mass x acceleration. With one method you have more mass that's moving slower. With the other method you have less mass that's moving faster. The result is nominally equal energy between the two.

Interesting, My thought was that the recoil spring was returning the lighter bolt rather than the hard impact of the normal bolt against the extra thick buffer that is being used to shorten the length of travel, taking away the ability of the spring to absorb the impact of the bolt.

 

[ftldrben]

Can I still purchase one?

Making any for M10/45's?

 

[bac0nfat]

Interesting, My thought was that the recoil spring was returning the lighter bolt rather than the hard impact of the normal bolt against the extra thick buffer that is being used to shorten the length of travel, taking away the ability of the spring to absorb the impact of the bolt.

How do you figure the lighter bolt has less impact? It's moving faster. Remember energy = mass x acceleration. Fast and light, or slow and heavy, can yield the same amount of energy. For example, the a 23 grain 5.7x28mm round has the same amount of energy as a 230 grain 45acp, despite the fact that the 45acp is 10 times heavier.

 

[medphys]

If the ROF is the same between the two, then in my opinion the amount of wear on the receiver will also be the same. Energy = Mass x acceleration. With one method you have more mass that's moving slower. With the other method you have less mass that's moving faster. The result is nominally equal energy between the two.

There's more to it than that. The heavy bolt impacting a solid buffer is going to put more stress on the receiver than a light bolt being absorbed by the spring.

 

[medphys]

But ultimately, whatever works in the end is what's important.

eace

 

[sage zee]

I'd love to see / hear it running at its claimed 950rpm without a buffer.
Preferably suppressed.

Anyone? Vid?

 

[johnnywitt]

Well, I've got my bolt now (thanks Joe for the ultra quick shipping). The thing that really struck me is how damn lightweight it is. The Uzi is a heavy little beast anyway, so this is a great ancillary benefit. A stock IMI Steel Bolt is about like picking up a damn gold ingot LOL. About like having an aluminum .22 bolt in there now with the Ti Bolt.
I live in the city now, so I can't just walk out and blast off a mag like I used to, or I would take a video with some 147gr Super Unleaded suppressed right now. It's gonna, for sure, speed it up quite a bit suppressed with the additional back pressure.