![]() The receiver also has smaller sear holes on the bottom, designed to obstruct the full movement of an SMG sear.īarrel: as you probably just realized, full auto "SMG" barrels are not the same as commercial semi barrels. This was a tradition of sorts started by Israel Military Industries to make their imported Uzis slightly harder to turn into NFA items, but it is not legally required. Semi trunnion (the part that holds the barrel in place) has a slightly smaller inner diameter to block installation of unmodified short SMG barrels. Receiver: semi Uzi has a blocking bar in the rear to prevent use of an unmodified full auto bolt. I also took side-by-side pictures of some parts for comparison. This is to comply with the ATF's 1982 ruling in which open-bolt guns were determined to be machine guns due to the ease with which they could be converted to full auto.Īs for the differences in individual parts, here they are summarized. On a fundamental level, the main difference is that the semiautomatic one fires from a closed bolt, while the military ones fire from an open bolt (more on that here if you don't understand). This is an in-depth background, not a list of what you have to do.įor the purposes of building, it would help you to understand the relevant differences between a military Uzi and a legal semiautomatic one like you'll be building. If you've built an AR-15, you can handle this.ĭo not be intimidated by this section. It skips most of the welding, riveting, etc. Note: this is only one build method of many, but it's the one most accessible to the average person. In this guide I'll explain the differences between a military Uzi and a semiautomatic Uzi, as well as how you can easily and legally build one yourself. The result of all this is that Uzis have become somewhat "niche" guns, and many people are unaware that they can easily get one. Some US-made Uzis have been offered for sale here and there, but with varying degrees of quality. About 30 years ago they were banned from import, and the pre-ban examples are now valuable collector items. While most can agree that Uzis are cool, it's not every day that you come across one for sale. The Uzi is one of the most recognizable guns around-it was used by Israel for decades, exported or licensed to nearly 100 countries, and even carried by the US Secret Service. ![]()
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