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Posted: 10/9/2009 4:53:09 AM EDT
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Ohio Ordinance is selling Registered UZI Micro Bolts. Can I put one of these bolts after registration into an UZI Pistol. I don't know if the bolts are open or closed. I have a question in now to Ohio about that. If they are open then addition machining maybe required. Would the bolt then have to be married to the pistol after conversion?
Also what if the UZI Pistol is in 45 acp, can it be converted to 9mm full auto with the registered bolt? |
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Ohio Ordinance is selling Registered UZI Micro Bolts. Can I put one of these bolts after registration into an UZI Pistol. I don't know if the bolts are open or closed. I have a question in now to Ohio about that. If they are open then addition machining maybe required. Would the bolt then have to be married to the pistol after conversion? Also what if the UZI Pistol is in 45 acp, can it be converted to 9mm full auto with the registered bolt? I'm looking up this right now, this page might help over on uzi talk. http://files.uzitalk.com/reference/pages/FAconversions_full.htm |
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I am not a Micro Uzi expert or micro uzi register bolt guru by any means. However in general after looking at the pics on Ohio Ordances site...
The micro bolt appear to be "registered" bolt which started out life as full size factory SMG spec bolts and were then cut down to Micro/Mini size. You can tell they are not factory Micro bolts as the pic on OOW website shows that they lack the sear pad contact "feet" which hold the bolt back at the proper distance to feed the first round. Basically with a bolt of this type you have to charge the Micro with the mag already inserted so that it doesnt mis-feed the first round out of the mag. In order to get this bolt to run you will need to change out the semi-auto lower (since the semi-auto version runs in a closed bolt operation) and I don't beleive that the semi-auto sear will function with a Mini SMG bolt missing the sear feet as it won't be held to the rear far enough to strip a round out of the magazine. You may also need to releive the bottom of the reciever channel to allow clearance for a SMG spec lowers larger SMG sear. In regards to whether the bolt has to be married to the receiver, I do not beleive it does as there really shouldn't be much in the way of modification to the receiver itself unless you are trying to run with a proper Micro Bolt with feet as the trunion has to be releived. The Mini/Micro also dont utilze a restrictor ring on the barrel so there shouldn't be much work required for the host itself. You have me at a loss on the 45ACP question. From a full size perspective you would just drop in a 9MM bolt and barrel and be good to go. However, I am not familiar enough with the micro to say whether a 45ACP micro host has some structural receiver differences between it and the standard 9MM receiver. I would go ask some of these questions over on Uzitalk as they will probably be able to give you a better answer than myself. Good luck James |
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Micro Uzis are closed bolt.
Adding a registered micro Uzi bolt to your semiauto micro lets you attach the stock and swap the fire control group for the full auto one. The bolt would be effectively married to the reciever until you remove the stock or register the reciever as an SBR, at which point the bolt could be removed and placed in a different semiauto micro. I believe the "feet" being discussed only apply to the mini, not the micro. Caliber conversion kits between .45 and 9mm were available (along with .41AE), and given the Uzi design, I would assume just a .45 pistol could be converted to 9mm micro with the registered bolt and a new barrel. But. I hope you have experience with small subguns, the micro is sometimes described as "the fucking scariest subgun on the market" due to the danger it can pose to the shooter due to its small size, lack of forward grip and extreme rate of fire resulting in recoil that is almost impossible to control with one hand. You need to use the stock and shoot it from the shoulder every time until you're very experienced with it. Kharn |
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Caliber conversion kits between .45 and 9mm were available (along with .41AE), and given the Uzi design, I would assume just a .45 pistol could be converted to 9mm micro with the registered bolt and a new barrel. Kharn Only if the bolt-face dimension is the same, which is not the case for .45 and 9mm. The RR conversion kits included a factory full auto bolt in the correct caliber, along with the magazine and barrel. |
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Micro Uzis are closed bolt. Adding a registered micro Uzi bolt to your semiauto micro lets you attach the stock and swap the fire control group for the full auto one. The bolt would be effectively married to the reciever until you remove the stock or register the reciever as an SBR, at which point the bolt could be removed and placed in a different semiauto micro. I believe the "feet" being discussed only apply to the mini, not the micro. Caliber conversion kits between .45 and 9mm were available (along with .41AE), and given the Uzi design, I would assume just a .45 pistol could be converted to 9mm micro with the registered bolt and a new barrel. But. I hope you have experience with small subguns, the micro is sometimes described as "the fucking scariest subgun on the market" due to the danger it can pose to the shooter due to its small size, lack of forward grip and extreme rate of fire resulting in recoil that is almost impossible to control with one hand. You need to use the stock and shoot it from the shoulder every time until you're very experienced with it. Kharn It my understanding that pretty much all the Uzi family could be set up as closed or open bolt operation as a SMG but that most of the conversion guns (Full Size, Mini, and Micro) were open bolt and that the Mini and Micro bolt were dimentionally the same with the sear "feet" off the front of the bolt. Every single full size and Mini I have ever seen was open bolt (although I have seen closed bolt full size SMG auto kits for sale but never in person) and the one micro I have seen in my life was also an open bolt conversion. Granted I am not the Uzi expert and most of my Uzi knowledge is on the full SMG size as that is the version I personally own. Would be interested to see if any Uzi experts chime in. James Austin, Texas |
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Ohio Ordinance is selling Registered UZI Micro Bolts. Can I put one of these bolts after registration into an UZI Pistol. I don't know if the bolts are open or closed. I have a question in now to Ohio about that. If they are open then addition machining maybe required. Would the bolt then have to be married to the pistol after conversion? Also what if the UZI Pistol is in 45 acp, can it be converted to 9mm full auto with the registered bolt? Those bolts were manufactured new by group industries. They were not "cut down bolts" They are registered "open bolts". These can be used in the Micro uzi and/or the mini uzi (with a small modification to the top cover) When you get it, it can be dropped right into your Uzi pistol, along with a full auto trigger housing (or modified semi TH). I recommend that you get a folding stock welded onto your gun before you shoot it. I had one of these, and did just that. Now, since we're talking about a registered bolt, you can have two hosts for this. Get the semi mini-Uzi, and a semi Uzi pistol. Get folding stocks put on each. Just remember, you need to either register them as sbr's for when you remove the bolt, or ... A better solution would be to just install a title I length (rifle) barrel in the host when the bolt is removed......Save $200.00 on each! |
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Now, since we're talking about a registered bolt, you can have two hosts for this. Get the semi mini-Uzi, and a semi Uzi pistol. I would take GREAT CAUTION with that recommendation. Note that the Micro UZI and MINI/FULL size UZI's use different trigger groups. The trigger group on a Micro or UZI Pistol is more narrow than what is found on a full size or Mini. Finding a factory FA MICRO UZI lower is very rare so most likely you will have to get a semi UZI Pistol lower that has had the selector block removed for FA fire. So looking at this ATF letter: http://www-2.cs.cmu.edu/afs/cs/user/wbardwel/public/nfalist/atf_letter61.txt, You'll see that it states, "The altered trigger housing assembly that would be removed from the firearm is in itself a combination of parts designed to convert a weapon into a machinegun, hence, is a "machinegun" as defined in the NFA. The assembly would have to be destroyed upon removal/ separation from the firearm." So if you had a modified UZI Pistol lower then moved the registered bolt to a MINI UZI host you now have a problem since you can't use that lower on the MINI. |
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Now, since we're talking about a registered bolt, you can have two hosts for this. Get the semi mini-Uzi, and a semi Uzi pistol. I would take GREAT CAUTION with that recommendation. Note that the Micro UZI and MINI/FULL size UZI's use different trigger groups. The trigger group on a Micro or UZI Pistol is more narrow than what is found on a full size or Mini. Finding a factory FA MICRO UZI lower is very rare so most likely you will have to get a semi UZI Pistol lower that has had the selector block removed for FA fire. So looking at this ATF letter: http://www-2.cs.cmu.edu/afs/cs/user/wbardwel/public/nfalist/atf_letter61.txt, You'll see that it states, "The altered trigger housing assembly that would be removed from the firearm is in itself a combination of parts designed to convert a weapon into a machinegun, hence, is a "machinegun" as defined in the NFA. The assembly would have to be destroyed upon removal/ separation from the firearm." So if you had a modified UZI Pistol lower then moved the registered bolt to a MINI UZI host you now have a problem since you can't use that lower on the MINI. You are right about that. I forgot to mention that the trigger group should be swapped out with a "semi-automatic group. He could use a modified mini-uzi tg. It would fit both receivers (although it might look strange in the pistol/micro receiver). Since the letter that you are referring to mentions "altering the semi-auto trigger group", it doesn't however mention using an unaltered full-auto trigger group that is available now (10 years after that letter was written), and we know how specific these letters are. Changing this fact now makes the point of this letter moot. I'm not so sure if having a full auto trigger group that was removed from a weapon would be illegal. Since he does have a legitimate reason to own it. And as long as he doesn't have a full-auto machinegun bolt that is not unregistered, I don't see how this would be a problem. |
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