.350 Legend

Designed specifically for Winchester’s straight-walled .350 Legend cartridge, these magazines are purpose-built to handle the unique geometry of the round. Unlike standard 5.56 or .223 magazines, .350 Legend AR magazines feature modified internal dimensions and feed lips engineered to deliver consistent, reliable cycling with this larger-diameter projectile.

The .350 Legend was designed from the ground up for deer hunting in states with straight-wall cartridge restrictions, and the magazine feeding it deserves the same level of precision engineering. At The Mag Shack, we stock only magazines that meet that standard.

Types of .350 Legend Magazines

Our collection covers the full spectrum of platforms and configurations, including:

AR-Platform Magazines

The most popular format in our lineup, the .350 Legend AR mag fits standard AR-15 lower receivers and is available from manufacturers like Duramag (CPD) and CMMG. These steel-construction magazines offer durability and reliable feeding across a wide range of shooting conditions.

Bolt-Action Rifle Magazines

For hunters running platforms like the Ruger American, Ruger Scout, Savage Arms Axis, or Winchester XPR, we carry dedicated detachable box magazines designed for each specific action and chambering. A quality Ruger .350 Legend magazine, for instance, is engineered to match the rifle’s feed geometry precisely.

One-Shot Sleds

For single-round presentations and precision hunting applications, we also carry the Ruger American Short Action One Shot Sled, a clean, functional option when minimalism is the goal.

.350 Legend Magazine Compatibility

One of the most common mistakes buyers make is assuming that any AR-15 magazine will work with their .350 Legend build. It won’t. The AR-15 .350 Legend magazine requires dedicated internal geometry to properly seat and feed the straight-walled .350 cartridge. Using a standard 5.56/.223 magazine will result in feeding failures and potential damage.

Similarly, bolt-action magazines are platform-specific. A magazine designed for the Ruger American will not interchange with one built for the Savage Axis or the Winchester XPR, even if they share the same caliber. Always verify compatibility with your specific make and model before ordering. Our magazine experts are available to help if you have any doubts.

Magazine Capacity Options

We carry .350 Legend magazines in a range of capacities to suit your use case:

• 3-Round – available for the Winchester XPR; a clean, low-profile option for hunting applications.
• 4-Round – the Savage Arms Axis configuration, purpose-built for that platform.
• 5-Round – the most popular hunting capacity. The 5-round .350 Legend magazine is available across multiple platforms, including AR-pattern rifles, Ruger American, Ruger Scout (AICS), ASC AR-15, and Glenfield Model A. If you’re looking for a .350 Legend 5-round magazine for your hunting build, this is the tier with the widest selection.
• 9-Round – available in the Ruger Scout AICS format for shooters who want more capacity without going full double-stack.
• 10-Round – a versatile mid-capacity option available in both AR-pattern (Duramag, CMMG, Ruger AR-556 MPR) and Glenfield Model A configurations.
• 20-Round – the Duramag CPD AR-15 .350 Legend 20-round mag is our highest-capacity option.

How to Choose a .350 Legend Magazine

Start with your rifle platform. Are you running an AR-15 lower, a bolt gun, or a proprietary system? That single question narrows your options considerably. From there, consider intended use. A .350 Legend AR magazine with a 20-round capacity serves a very different purpose than a .350 Legend 5-round magazine built for a bolt-action hunting rifle in a straight-wall state.

Material matters, too. While polymer options exist, our experience consistently points to steel-body magazines as the more durable long-term investment, particularly in field conditions.

Finally, buy from names you trust. Brands like Duramag, CMMG, and Ruger have earned their reputations through consistent quality and real-world performance.