3rdmardiv Posted February 18 Report Share Posted February 18 I am not familiar with blocking bars. I have a full size, select fire, IMI Uzi, that I assume does not have one. Can I get some help on what a blocking bar is and where I could check for on my Uzi. Thanks Quote Link to comment Share on other sites More sharing options...
subgun24 Posted February 18 Report Share Posted February 18 Blocking bars are a part of the receiver that keeps an unmodified full auto bolt from fitting inside the receiver of a semi auto UZI. Usually an UZI conversion has had the blocking bar removed. Some Select fire UZIs are "Registered Bolt". Which means that the full auto bolt is modified to accommodate the blocking bar. Watch this video if you have time. Richard explains it... Quote Link to comment Share on other sites More sharing options...
3rdmardiv Posted February 18 Author Report Share Posted February 18 Thank you for the video, answered a lot of questions. My gun has the blocking bar with the slotted bolt. Does this make my Uzi less desirable, when and if I decide to sell? Quote Link to comment Share on other sites More sharing options...
MPFiveO Posted February 18 Report Share Posted February 18 1 hour ago, 3rdmardiv said: Thank you for the video, answered a lot of questions. My gun has the blocking bar with the slotted bolt. Does this make my Uzi less desirable, when and if I decide to sell? Technically, yes. It's not a problem, but your gun falls into class of firearms that have what is called improper registration. Because your receiver wasn't modified to full auto specs it isn't really the machine gun, your slotted bolt is the machine gun. It would be the same as an AR-15 that was registered using an un-serialized drop in auto sear. The host isn't the machine gun, the conversion part is. What this means is that the two items are married. You cannot legally remove your blocking bar. If you do, you end up with two machine guns. One is the receiver and the other the bolt. You cannot replace the bolt either. Slotting a new bolt as a replacement would be manufacturing a new machine gun. You cannot move the bolt to another host as your host is the registered part and the bolt in another gun would be considered an illegal conversion. So, you're basically stuck with what you have. You also cannot convert your Uzi to different calibers as those would require slotted bolts and those bolts would be considered unregistered machine gun conversion parts. But, despite not being able to replace parts or convert it to a different caliber, you have a basic Uzi. Very seldom does anything go wrong with the Uzi, it's a tank of a submachine gun. I've been shooting my Vector Uzi since 2001 and have never had an issue with it. Not a single part has broken or worn out. It's been shot tens of thousands of rounds both suppressed and unsuppressed. Enjoy your Uzi for what it is and make a few bucks when you decide to sell it. 1 Quote Link to comment Share on other sites More sharing options...
StrangeRanger Posted February 18 Report Share Posted February 18 ....unless the bolt carries a separate serial number from that on the gun and the Form 4 lists the bolt and its S/N and not the gun and its S/N Quote Link to comment Share on other sites More sharing options...
3rdmardiv Posted February 21 Author Report Share Posted February 21 Thanks for the help! Quote Link to comment Share on other sites More sharing options...
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