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What Does AB 857 Mean for My 80 Lower Receiver

If you live in California, you love AR-15s, and you’re trying find out the meaning AB 857 and its implications on your 80 lower build, keep reading. You live behind enemy lines in the state of California. Yes, AB 857 is simply one of the many laws the representatives of California feel they need to impose upon lawful gun owners like you. In just a few months, those building their own 80% lowers must apply for a serial number – before building. We’ll explain the law in detail below, but first, to all those gun lovers outside of California, you may want to read this as well. We are not lawyers and this is not legal advice, but we can help you understand the false logic behind the madness that is California gun laws. These laws could end up in your state, too.

AB 857 and Building an 80% Lower in California

For those living in California, you have been subjected to asinine laws for sometime now that your fellow citizens of America get to escape. AB 857 specifically deals with placing a serial number on every weapon personally built by the owner. Per Federal law, one does not need to put a serial number on a weapon they are building for personal use. Federal law is just not good enough for California it would seem. In fact, we’ve had to add an entire series of product labeled specifically California Compliant, including our complete AR15 Lower Assembly.

AR15 Lower Parts Kit - California Compliant

Be sure to pick up a California Compliant Lower Parts Kit to finish your 80% lower!

AB 857 now requires every weapon built to have a serial number and up until July 1st, 2018 you could put any serial number you wanted so long as it met standards. Personally I’d go with gun number “123456789.” However, it’s what happens after July 1st that really has our blood boiling. After that date you must now FIRST apply for a serial number from the State of California. You must then pay a fee, because of course the government has got to get theirs, and then wait for the number to be assigned. California will then know everyone who has built their own AR. For more on nutty gun laws you can read California 2017 AR Laws.


You Can Still Own an 80% Lower in CA

If that law doesn’t make the case for why every gun owner should have a bucket load of 80% lowers in their closet I don’t know what will. You see, the beauty of the 80 lower is that until it is not considered a firearm until the machining is finished. That means no registration, no fees paid to the state of California. You can literally have as many 80 lowers as you want. Then, when the zombie apocalypse hits you can just complete those bad boys at will. So why buy one when you can buy 5? Also remember, your AR-15 upper is not considered a firearm and can be shipped straight to your door.

80% Lower Easy Jig with Tooling

Once you’ve got that 80% lower serialized, you’ll need an 80% lower jig with tooling. Try out the Easy Jig!

We’re not trying to help people skirt laws. We simply believe the 2nd Amendment is important for California gun owners. If gun grabbers are going to get creative about how to take them from you, then it is high time we match them with our own creativity. Today it is AB 857. Tomorrow it will be AB 858, 859… With the newest gun law California can consider. To those living behind enemy lines we say Godspeed and good luck. We can’t change the law for you, but we ship those 80 lowers right to your front door. 

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At AR-15LowerReceivers, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


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