Two Legal Paths to a California AR-15
California bans "assault weapons" by features, not by name. For an AR-15 with a detachable magazine, a single listed feature — a pistol grip, flash hider, telescoping stock, or forward grip — makes it a banned assault weapon. There are two well-established ways to own a modern AR in California legally, and both are alive and well in 2026.
Pick one — both are legal in 2026
| Metric | Value |
|---|---|
| Path 1 | Featureless |
| Path 2 | Fixed Magazine |
| Magazine Cap | 10 Rounds |
| Muzzle Device | Brake OK |
Path 1: Featureless
The most popular path. Keep a detachable magazine, but remove every listed feature: no pistol grip (a fixed "fin" or wrist-rest grip instead), a fixed stock, and a muzzle brake rather than a flash hider. Configured this way, the rifle isn't an "assault weapon" — and you keep the convenience of a detachable mag.
The Simplest Path: A Featureless Rifle
Buy it already compliant, no build required:
Or Build It: Featureless Complete Lowers
The Featureless Parts
A featureless grip and a fixed stock are the two swaps that take a standard lower out of "assault weapon" territory:
Path 2: Fixed Magazine
Prefer to keep the pistol grip and adjustable stock? Then the magazine has to be fixed — legally, it can't be removed without opening the action (separating the upper and lower or pulling a takedown pin). A fixed-magazine conversion kit does exactly that.
Magazines: 10 Rounds
Either path, California caps magazines at 10 rounds under Penal Code 32310. Buy 10-round magazines — they're made specifically for capacity-limited states.
Muzzle Devices: Brake, Not Flash Hider
A flash hider is a listed feature; a muzzle brake or compensator is not. On a featureless build, a brake keeps you compliant while taming recoil:
The Bottom Line
A California-legal AR-15 is very much a thing in 2026 — you just pick your path. Featureless keeps detachable mags at the cost of a pistol grip; fixed-magazine keeps the ergonomics at the cost of quick reloads. Either way: 10-round magazines, a muzzle brake instead of a flash hider, and you're compliant.
Filed underAR-15/5.56 NATO/Lower Receivers/Buyer's Guide/How-To
FAQ
Frequently asked questions
Is the AR-15 legal in California?
- Yes, in a compliant configuration. California bans 'assault weapons' by feature, so a legal AR-15 is either 'featureless' (detachable magazine, no listed features) or 'fixed-magazine' (keeps features but the magazine can't be removed without opening the action). Both are legal in 2026 with a 10-round magazine.
What's the difference between featureless and fixed-magazine?
- A featureless build keeps a detachable magazine but removes listed features (no pistol grip, fixed stock, muzzle brake instead of flash hider). A fixed-magazine build keeps the pistol grip and adjustable stock but the magazine is fixed — you open the action to reload. Featureless is faster to reload; fixed-mag feels more like a standard rifle.
What's the magazine limit in California?
- 10 rounds, under Penal Code 32310. This applies whether your AR is featureless or fixed-magazine. Buy 10-round magazines made for capacity-limited states.
Can I have a muzzle brake in California?
- Yes. A muzzle brake or compensator is legal — only a flash hider (flash suppressor) is a listed feature that would make a detachable-mag rifle an assault weapon. A brake is the standard choice on a featureless California build.
What makes a rifle 'featureless'?
- A featureless AR-15 has none of California's listed features: no pistol grip, no thumbhole stock, no folding or telescoping stock, no flash hider, no forward grip, and no grenade launcher. It uses a fixed 'fin' grip, a fixed stock, and a muzzle brake, with a detachable 10-round magazine.
Do I have to register a featureless AR-15 in California?
- A properly configured featureless or fixed-magazine rifle is not an 'assault weapon,' so it isn't subject to assault-weapon registration. It's bought through an FFL like any other long gun. Always confirm your specific build with your FFL, since configuration details matter.
Written by
GPP Editorial TeamAR Build Specialists
GunPartPicker guides are powered by data from real builds. What builders actually select tells the story.
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Tools for this guide
- Legal toolGun Travel CheckerCan I bring my gun to another state? Pick where you start, where you are going and what is coming along: carry pistol, AR-15, magazines, suppressor, SBR, brace, forced reset or binary trigger, hollow points. Every state on the route is checked for transporting firearms across state lines: magazine limits, assault weapon bans, NFA rules, carry permit type and trigger bans, with what to do before the state line.
- Planning toolAR Build Cost CalculatorHow much does it cost to build an AR-15? Pick caliber, barrel length, stock or brace and optic, then drag both edges of the price band from the cheap end to the top end. Every slot fills with the part builders add most that is in stock, priced live. The headline total is the core rifle, optics and extras are priced separately, and beside them sits what builders really pay per slot, measured from real part picks. Roll a random build, or open yours in the builder in one click. Computed from over 1 million AR parts selected on GunPartPicker since 2020.
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