Washington DC restricts magazine capacity to 10 rounds

Washington DC enforces a 10-round magazine capacity limit. Magazines exceeding this capacity are unlawful to sell into the district, even though they are legal everywhere else in the country. This is one of fourteen states plus Washington DC with a state-level magazine limit. The rule applies to any magazine sold to a Washington DC customer, whether you ship it there or they pick it up. The rest of this page explains what orders you must refuse, how to control it in your Shopify store, and why payment processors care about getting it right.

What this means for your store

If you sell magazines, you must block or refuse any order of a magazine exceeding 10-round capacity shipped to Washington DC. You cannot sell a 15-round, 20-round or 30-round magazine there legally, even if the customer claims personal use. Existing customers in Washington DC who previously bought higher-capacity magazines cannot receive replacements or restocks of the same product. The cost of getting this wrong is real: a shipment seized at the border, a customer complaint to your processor, and a underwriting flag on your account that follows you even if you move to a new gateway. Your payment processor sees restricted shipments as evidence of control failure, whether or not the district enforces the rule actively.

The control that actually enforces it

You control this at the product and geo-block level. In Shopify, create a shipping profile for each magazine that lists only states and countries where that capacity is lawful. Set the 10-round profile to include Washington DC; set higher-capacity profiles to exclude it. Without a technical control, you rely on a manual checkout note or an honor system, which fails reliably. A note saying 'do not ship >10 rounds to DC' breaks the moment a staff member changes, a customer self-checks out, or a fulfillment center processes the order without reading notes. The control must live in Shopify's shipping settings so that the system itself prevents the shipment.

Why an underwriter cares

High-risk underwriters flag magazine shipments into restricted states as a separate compliance issue from the product category itself. A 10-round magazine is lawful everywhere except Washington DC, but shipping a higher-capacity magazine there is unlawful into that one jurisdiction. Underwriters want to see a documented shipping control — a Shopify profile, a metafield, a verification step — that proves you do not ship restricted products into restricted zones. Without it, even a first violation suggests you do not have systems in place, which is an underwriting red flag independent of whether enforcement is active.

Frequently asked

Can I sell magazines to Washington DC customers at all?

Yes, but only 10-round capacity magazines. Any magazine exceeding 10-round capacity is unlawful to sell into Washington DC. If you sell only higher-capacity magazines, you cannot legally serve that market. If you sell both capacities, you must block the higher-capacity ones at checkout for DC addresses.

What counts as a magazine for this rule?

The rule applies to any detachable magazine sold as a firearms accessory. The 10-round limit is a hard capacity ceiling. A magazine that holds 11 rounds is unlawful; a magazine that holds 10 is lawful. If you are unsure whether your product qualifies, consult with your legal advisor, because the cost of a misclassification is seizure and a processor flag.

Do I need to set this up in Shopify before launch?

Yes. Before you ship any magazine order to Washington DC, create a shipping profile that separates 10-round and higher-capacity products, then assign the profiles correctly. If you already have customers in DC and have shipped higher-capacity magazines there, disclose this to your payment processor now. A proactive disclosure is treated better than a discovery by the processor.