California Rifle Laws: Features, Magazines, and Legal Builds

California rifle laws require buyers to be at least 21 (or 18 with a valid California hunting license for certain long guns), pass a written safety test, clear a 10-day background check through a licensed dealer, and end up with a rifle that complies with the state’s assault weapon, magazine capacity, and named-model rules. Ammunition purchases, transport, and storage carry their own separate requirements. Getting any single piece wrong can turn a lawful purchase into a criminal charge, so the details matter.

Who Can Buy a Rifle in California

Licensed dealers cannot sell any firearm to anyone under 21. There is one narrow exception: buyers who are at least 18 and hold a current hunting license from the Department of Fish and Wildlife may purchase a long gun, but that exception excludes handguns, semi-automatic centerfire rifles, frames, and receivers.¹ So an 18-year-old with a hunting license can buy a bolt-action deer rifle or a .22 rimfire. An AR-15 or similar semi-automatic centerfire platform requires you to be 21, hunting license or not.

Every buyer needs a Firearm Safety Certificate. You earn it by scoring at least 75 percent on a 30-question written test on safety rules and California gun law. DOJ-certified instructors administer it, usually at the dealership, for $25.² The DOJ publishes a free study guide covering everything on the exam.³ Active military, law enforcement, and holders of a valid hunting license (for long guns) are exempt.

Bring a valid California driver’s license or state ID. If yours carries the “FEDERAL LIMITS APPLY” notation, you also need proof of lawful presence in the United States: a U.S. passport, certified birth certificate, certificate of naturalization, or permanent resident card.⁴ Proof of residency matching the address on your ID (a utility bill or government document) is also required.

Meeting age and paperwork rules isn’t enough if you fall into a prohibited category. A felony conviction (California, federal, another state, or another country) results in a lifetime ban. So does addiction to a narcotic drug, or knowing you have an outstanding warrant for a qualifying offense.⁵ Dozens of misdemeanors trigger a 10-year ban, including assault, battery, domestic violence, stalking, criminal threats, brandishing, and negligent discharge. Beginning in 2025, misdemeanor animal cruelty also triggers the 10-year prohibition.⁶ People adjudicated a danger to themselves or others due to mental illness, found incompetent to stand trial, or found not guilty by reason of insanity are prohibited, as are people subject to certain domestic violence or gun violence restraining orders. If you have any doubt about your eligibility, resolve it before starting a purchase.

What Rifles Are Legal to Own

California defines “assault weapon” several ways, and the rifle you bring home must clear all of them.

Feature-Based Rules

A semi-automatic centerfire rifle without a fixed magazine becomes an assault weapon if it has any one of the following features:⁷

A pistol grip that protrudes conspicuously beneath the action
A thumbhole stock that functions like a pistol grip
A folding or telescoping stock
A grenade or flare launcher
A flash suppressor (distinct from a muzzle brake, which only manages recoil)
A forward pistol grip mounted ahead of the trigger guard

The operative words are “without a fixed magazine.” Every one of those features becomes lawful on a semi-automatic centerfire rifle if the magazine is fixed. None of these feature restrictions apply to bolt-action, lever-action, or rimfire rifles, because those aren’t semi-automatic centerfire platforms.

Rifles Banned by Name

Separate from the feature rules, California maintains a list of specific makes and models that are assault weapons no matter how they are configured. A featureless version of a named rifle is still illegal. The original list, from the 1989 Roberti-Roos Assault Weapons Control Act, includes all AK-series variants, Colt AR-15 series, Armalite AR-180, Bushmaster Assault Rifle, Beretta AR-70, all Steyr AUG models, and many others.⁸ A later list added further AK and AR-15 variants identified through court proceedings.⁹ What matters legally is the marking on the receiver. A lower stamped with a banned model name is an assault weapon regardless of what parts you bolt to it. Always check the rollmark before buying or transferring any receiver.

California also bans .50 BMG rifles outright. Manufacturing, importing, selling, or transferring one is a felony, and simple possession is a separate offense chargeable as a misdemeanor or a felony. You cannot bring a .50 BMG rifle into the state.

Magazine Capacity

Any feeding device that accepts more than 10 rounds is a large-capacity magazine.¹⁰ Manufacturing, importing, selling, giving, or buying one is punishable by up to a year in county jail or a state prison sentence. Possession alone can be charged as an infraction with a $100-per-magazine fine or as a misdemeanor with up to a year in jail.¹¹ Two narrow exceptions: .22 caliber tubular feeding devices and tubular magazines housed in lever-action rifles are not classified as large-capacity magazines regardless of round count. A magazine can be permanently modified to hold 10 or fewer rounds, but the modification has to be genuinely permanent.

Legal Ways to Build a Semi-Auto Centerfire Rifle

California owners who want an AR-15 or similar platform generally choose one of two compliance paths.

Featureless

A featureless rifle avoids all six prohibited features. The magazine stays detachable through a normal button release. Owners typically install a grip fin or wrap that prevents the web of the hand from dropping below the action, swap a collapsible stock for a fixed-length one, and choose a muzzle brake instead of a flash suppressor. No vertical foregrip. The trade-off is ergonomics; the payoff is a conventional reload.

Fixed-Magazine

A fixed-magazine rifle keeps every tactical feature, including a pistol grip, telescoping stock, and flash suppressor. The magazine cannot be removed without disassembling the action.⁷ On most AR-15 setups, this means pulling the rear takedown pin and hinging the upper open to release the magazine. Aftermarket devices accomplish this. Reload speed suffers considerably.

Neither approach is universally better. Pick the one that fits how you plan to use the rifle, and verify every component before you leave the house with it.

How the Purchase Works

Once you have picked a compliant rifle and handed over your paperwork, the transaction follows a fixed sequence.

The dealer submits your information electronically through the Dealer Record of Sale (DROS) system, triggering a Department of Justice background check. No firearm may be delivered within 10 days of the application.¹² Total state fees run $37.19: a $31.19 DROS fee, a $1.00 Firearms Safety Act fee, and a $5.00 Safety and Enforcement fee. Private-party transfers use the same DROS process; the dealer facilitating it may charge up to $10 per firearm on top of the state fee.¹³

After the 10-day wait, you return to pick up the rifle. Before it leaves the store, you perform a safe handling demonstration for a DOJ-certified instructor, showing you can safely load, unload, and clear that specific firearm.¹⁴ The dealer also confirms you have a California-approved firearm safety device such as a cable lock. Many rifles include one; if yours doesn’t, you’ll buy one at the counter.

If the background check is denied, the DOJ Bureau of Firearms sends a letter (usually within about two weeks) explaining the reason and how to obtain the underlying record. A “delayed” or “undetermined” status is different from a denial. If 30 days pass without a determination, the DOJ notifies the dealer, and it becomes the dealer’s discretion whether to release the firearm.¹⁵

Buying Ammunition

Ammunition purchases run through licensed vendors, and every sale requires a DOJ background check before the box leaves the counter.¹⁶

If your personal information already matches a firearm record in the state’s Automated Firearms System (meaning you’ve previously bought or registered a gun in California), you use the Standard Ammunition Eligibility Check, which costs $5.00 as of July 2025 and usually returns results in minutes.¹⁷ If you have no firearm record on file, you need a Basic Ammunition Eligibility Check, which costs $19.00, requires more personal information (physical description, citizenship, place of birth), is valid for 30 days, and covers a single transaction.¹⁶

Online orders are legal, but the ammunition must ship to a licensed California vendor. You pick it up in person and go through the same eligibility check. Ammunition cannot be delivered directly to your door.

Transport and Storage

Rifles don’t need to be in a locked container during transport, but they must be unloaded whenever in a vehicle: no round chambered, no loaded magazine inserted.¹⁸ A soft or hard case is fine.

Registered assault weapons are the exception. If you lawfully registered one during a prior registration period, it must be transported unloaded in a locked container, and only between specific locations such as your home, a licensed range, or a gunsmith. A “locked container” means a fully enclosed, hard-sided container secured with a padlock, key lock, or combination lock. A trunk qualifies; a glove compartment does not.¹⁸

Storage carries criminal penalties too. If you store a firearm where you know or should know a child or prohibited person can reach it, and they gain access, you can be charged with criminal storage. Penalties escalate based on what happens next, from negligent storage where no one is hurt up to a felony when someone is killed or seriously injured.¹⁹ A conviction also triggers a 10-year firearm ban.⁶ A cable lock is the minimum; a safe or locked cabinet is better if you share your home with children or anyone who might be prohibited.

Bringing a Rifle Into California

New residents have 60 days to report the firearms they bring with them by filing a New Resident Report of Firearm Ownership (form BOF 4010A) with a $19.00 processing fee.²⁰ You’ll need your California driver’s license or ID, and the “Federal Limits Apply” documentation rules apply here as well. Missing the 60-day deadline can result in criminal prosecution.

Some rifles cannot enter the state at all. Assault weapons, machine guns, and magazines holding more than 10 rounds may not be transported into California, and the new resident report cannot be used to register assault weapons.²⁰ If your rifle is on the named ban list or qualifies as an assault weapon under the feature rules, you have to sell it, store it out of state, or modify it to comply before crossing the state line.

A separate rule catches California residents who buy a firearm while temporarily out of state. You cannot personally bring that firearm back in. It must be shipped to a licensed California dealer, who processes the transfer through the standard DROS system as if you were buying it locally.²¹

1
California Legislative Information. California Code PEN 27510 – Restrictions on Sale of Firearms to Minors
2
State of California – Department of Justice – Office of the Attorney General. Firearm Safety Certificate Program FAQs
3
California Department of Justice. Firearm Safety Certificate Study Guide
4
New York Codes, Rules and Regulations. 11 CCR 4045.1 – Additional Documentation Requirements for Eligibility Checks
5
California Legislative Information. California Code PEN 29800
6
California Legislative Information. California Code PEN 29805
7
California Legislative Information. California Code PEN 30515 – Assault Weapons and .50 BMG Rifles
8
California Legislative Information. California Code PEN 30510
9
California Department of Justice. California Attorney General Assault Weapons Identification Guide
10
California Legislative Information. California Code PEN 16740
11
California Legislative Information. California Code PEN 32310
12
California Legislative Information. California Code PEN 26815 – Sale Lease or Transfer of Firearms
13
State of California – Department of Justice – Office of the Attorney General. Frequently Asked Questions
14
California Legislative Information. California Code PEN 26850 – Safe Handling Demonstration
15
State of California – Department of Justice – Office of the Attorney General. Bureau of Firearms
16
California Department of Justice. Department of Justice Regulations for Ammunition Purchases or Transfers
17
State of California – Department of Justice – Office of the Attorney General. Regulations: Ammunition Purchase Fee
18
State of California – Department of Justice – Office of the Attorney General. Transporting Firearms in California
19
California Legislative Information. California Code PEN 25100
20
State of California – Department of Justice – Office of the Attorney General. Firearms Information for New California Residents
21
California Legislative Information. California Code PEN 27585