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The Daily Insight

Can I buy a lower AR 15?

Author

Ava Robinson

Updated on March 06, 2026

It's important to know when you're in the market for an AR lower receiver, that the lower receiver is the only part of an AR-15 that the BATF legally recognizes as a firearm. That means a few things. All the other parts get shipped right to your door. A lower, however, must be shipped to an FFL dealer.

Furthermore, can I ship an AR lower?

Go me. Rifles including lowers, a firearm, (parts) can be shipped by any non licensee via USPS by Ground only or via common carrier, any shipping method, ground or air. If by USPS, the package must not contain any indication of it contents and it is not necessary to declare the package in any way.

Also, are AR 15 lowers universal? The lower receiver of an AR-15 is a more than a part; it is the single piece that every other part revolves around. Modular rifle design developed to adapt to the changing needs of individual soldiers. Lowers are (supposed to be) universal and the parts that go in and on them are interchangeable.

Keeping this in view, can you buy a complete lower receiver?

Yes! California does have certain stipulations that other states don't have (as usual), but it is 100% legal for you to purchase, complete, and own an 80% firearm in the Sunshine State.

Can you buy a lower receiver under 21?

You cannot legally transfer a receiver or a frame to someone under the age of 21. (NFA) firearms, including silencers.

Related Question Answers

Can you fly with a stripped lower?

stripped lower is legally a firearm and must be treated as such. B Stripped lower is a hunk of aluminum and cannot be used as a weapon. Popcorn is popped and ready. Declare at the counter.

What parts of an AR 15 requires FFL?

On an AR-15, the serialized portion of the firearm is the lower receiver. That is the only part that requires an FFL transfer (background check, etc) to purchase. Everything else can be purchased without an FFL, but without the lower receiver, these parts are just paperweights.

Can you ship AR uppers?

The upper receiver is not the firearm and has no restrictions in regards to shipping. The lower receiver is what is considered to be the firearm. You can ship lower receivers through USPS to an FFL, if the buyer is another state, just not handguns.

What is a stripped AR lower?

A stripped lower is a lower receiver without a lower parts kit. It is a 100% lower and is considered a firearm and subject to all laws. In a sense, a stripped lower is no different than a complete lower in that both are 100% lower receivers and are classified as firearms.

How does ship my gun work?

Shipping your gun through ShipMyGun.com is quick and easy! We send you a prepaid label and even a shipping box in some cases, and provide you all the information on where to drop off your package—all for one low price. We ship thousands of guns a year, so we can offer the best possible rates on firearm shipments!

Can you buy a lower receiver without FFL?

As the title says, you're probably wondering if you need an FFL to buy an 80% lower receiver. The good news is: No, you do not need an FFL to purchase an 80% lower receiver. A traditional stripped lower receiver, one that is ready for a parts kit, requires an FFL, even though by itself it is just a chunk of metal.

Does lower receiver brand matter?

Most of the receivers on the market are made by Aero Precision. They have a non disclosure agreement with the AR builders that buy from them to keep quiet about it. They have good quality control. This is one of the major factors in why it doesn't matter much who you get your lower from.

What does an 80% lower mean?

An 80% lower is a receiver blank, an incomplete firearm that isn't operable and can't be made to operate without additional fabrication. Because of this, 80% lowers and receiver blanks aren't considered firearms by the Bureau of Alcohol, Tobacco, and Firearms (ATF).

Can you have a lower receiver shipped to your house?

As the title says, you're probably wondering if you need an FFL to buy an 80% lower receiver. The good news is: No, you do not need an FFL to purchase an 80% lower receiver. That applies to all 50 states. You can order one online and have it shipped directly to your door, no questions asked.

Are all AR 15 lowers the same?

The AR-15 has an upper and lower receiver that is made from some form of aluminum. That being said, you will find that AR upper and lower receivers will vary in exact fit between different manufacturers. That doesn't mean that they won't fit. Only that you will run into some that are easier to put together than others.

What does AR stand for?

The “AR” in “AR-15” rifle stands for ArmaLite rifle, after the company that developed it in the 1950s. “AR” does NOT stand for “assault rifle” or “automatic rifle.” AR-15-style rifles are NOT “assault weapons” or “assault rifles.” An assault rifle is fully automatic, a machine gun.

Is it illegal to complete an 80 lower?

Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE) The long story short is that 80% lowers are federally legal. However, they must meet a few criteria, which we will get to momentarily. A true 80 percent lower does not meet the criteria of a firearm as laid out by the ATF and in the Gun Control Act.

What caliber is an AR 15?

The rifle comes in 2 calibers; the military caliber of 5.56 X 45 or the equivalent . 223. Because of the pressures associated with the 5.56mm, it is inadvisable to fire 5.56mm in an AR-15 marked . 223 and can result in damage to the rifle or injury to the shooter.

Are 5.56 and 7.62 lowers the same?

A 7.62X39 upper will fit on a lower just fine. As the upper receiver is the same, it is only the barrel and bolt that are different. Originally Posted By rebel_rifle: As the upper receiver is the same, it is only the barrel and bolt that are different.

How many lower receivers can I buy?

Stripped lowers, or complete lowers without buttstocks fall under "other", and you have to be 21 to purchase them from an FFL. However, they are NOT handguns, so multiple sales are not required to be reported to the ATF as a multiple handgun sale.

How many 80 percent lowers Can I own?

As long as it is for personal use, you don't have to put a serial number on the weapon, and it's absolutely legal to make a weapon from the lower. As with many federal laws, individual states can add to or have completely separate laws. Such is the case with 80 lower receivers and many weapons in general.

Will a 300 Blackout Upper work with 5.56 lower?

The 300 AAC Blackout cartridge gives performance very similar to the 7.62×39, but in a cartridge that works perfectly with standard AR-15 bolts, magazines and lowers. You can convert any standard 5.56 AR-15 to .300 AAC Blackout by merely changing only the barrel.

Can you put a forged upper on a billet lower?

Nothing for you to worry about. Forged is stronger and what is used on MilSpec lowers if that makes any difference, but basically its a parts holder. In a catastrophic failure it wold be better to have a forged upper vs a billet one. You can have a forged upper and lower and tolerances may still be a bit loose.

Can you put a piston upper on any lower?

Well, if you're anything like me when I started out, you probably already have a cheaper (but no less awesome) direct-impingement AR-15 laying around. If that's the case, then you can just pop your current upper receiver off, and slap on a new piston-driven upper. It'll work just fine with your lower.

What should I look for in an AR lower?

There are three factors to consider when you look for an AR-15 lower receiver. They are: Type – Whether it's forged, billet, or polymer, the type of lower receiver you choose should strike a balance between form and function. It should also fit your budget.

Can you buy stripped lowers at 18?

You must be 21 to buy a lower from a dealer. Face to face sales are dependent on your state law but federally the age is 18. The reason is because under federal law you can buy a long gun (rifle or shotgun) at 18. Any other firearm the age is 21.

How old do you have to be to buy a 80% lower?

Yes you may build a lower from an 80%. The law only says you must be 18 to buy a long gun. You can own one at any age.