California restricts magazine capacity to 10 rounds
You can sell firearms accessories into California, but not all of them. The state restricts magazine capacity to 10 rounds. That means any magazine or drum that holds more than 10 rounds is illegal to ship there. The rest of the country has no federal capacity limit, so the same product you sell nationwide cannot go to a California customer unless it meets that spec. This page covers what that limit covers and does not cover, how to enforce it inside Shopify, and why payment processors flag stores that ship into California without the control in place.
California restricts magazine capacity to 10 rounds. It is one of fourteen states plus Washington DC with a state-level limit, where the rest of the country has none.
Nothing about the product is unlawful nationally — it is unlawful into California, which makes this a catalog and geo-blocking problem rather than a business-model one.
Source: World Population Review — magazine capacity laws by state (2026) · as of 2026-07. Rules in this area change, and this is not legal advice — verify the current position for every state you ship into before you rely on it.
What this means for your store
A customer in California orders a 15-round magazine. You ship it. That order violates state law, and you are liable. Your payment processor sees a pattern of shipments into a restricted state and flags your account as high-risk. Underwriters may then demand evidence of a control or suspend your gateway. If you have existing customers in California who bought before you knew the rule, they are still holding illegal product — and you cannot retrieve it. The only forward move is to filter those SKUs at checkout for California addresses. This means rebuilding your catalog so that high-capacity magazines are blocked or route to a different fulfillment path. It costs nothing in software but requires you to audit every SKU and know your inventory spec. Done wrong, it costs your account.
The control that actually enforces it
In Shopify, the control lives in shipping profiles and product metafields. Each high-capacity magazine must carry a metafield flagging its round count. At checkout, you assign those products to a shipping profile that excludes California. Alternatively, you use Shopify Markets to create a California-specific storefront where those SKUs do not appear. Without this, there is no gate — the order goes through, and you discover the problem when your processor does. A manual note saying 'check capacity' is not a control. It fails when a team member forgets, when your staff turns over, or when you scale to fulfillment. You need automation, not intention.
Why an underwriter cares
A high-risk underwriter sees California shipping without a capacity limit filter and treats it as a compliance gap independent of your business model. It signals that you do not audit your catalog against state law, and that you ship without checking what the product is. Even if your gateway tolerates firearms accessories, shipping restricted SKUs into a restricted state is a separate red flag — it suggests poor order management. Underwriters want to see proof that the control exists and is enforced. That means a screenshot of your shipping profile rule, your Shopify Markets setup, or a metafield audit showing every SKU is tagged. Without evidence, they assume you are shipping blind.
Frequently asked
Can I sell firearms accessories in California at all?
Yes. You can sell to California. The limit is only on magazine capacity — 10 rounds maximum. Any magazine or drum holding more than 10 rounds cannot ship there. Everything else (grips, slings, holsters, ammunition carriers, optics mounts) is legal. You need to filter your catalog so high-capacity magazines do not appear at checkout for California addresses, but the category itself is not banned.
What counts as a magazine for this rule?
A magazine or drum that holds ammunition and attaches to a firearm. If a product holds more than 10 rounds, it is restricted to California. Detachable and fixed magazines both count. Speed loaders, ammunition boxes, and loose-round carriers do not count as magazines. If you are unsure whether a SKU qualifies, check the product spec — most manufacturers list round capacity clearly.
What happens if I ship a high-capacity magazine to California by mistake?
The order violates California law. You become liable, and your payment processor will see the pattern. They flag your account as high-risk and may demand evidence of a control or suspend your gateway. You cannot retrieve product that is already with a customer. Your only protection is to enforce the filter at checkout before the order ships. Once it ships, the damage is done.
Moving firearms accessories to a new store? See what actually transfers
A free read-only scan counts every product, variant, image, customer, order and metafield in your store and tells you exactly what a migration would carry across — including the per-product shipping rules and market restrictions that enforce state law for you.
▶ Run the free demo scanMove everything, verified twice, from $247
Your existing store is only ever read from — we never write to it. Everything else about selling firearms accessories: the payments position, the reserve to expect and who underwrites it →