CMMG 10 Round 350 Legend Magazine for AR-15

SKU: 35AFC19

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10 Round .350 Legend Big Bore Magazine

This Stainless Steel 10-Round Magazine for .350 Legend is an AR-15 pattern magazine that CMMG trusts for reliable feeding in their large-bore rifles. Constructed from premium 410 Stainless Steel, and built with advanced interior and exterior geometries to ensure ultimate reliability and feeding.

Gives A Specific Rib Geometry Crucial To Reliable Feeding

This .350 Legend magazine will not flex or swell like polymer due to storing while loaded or environmental / temperature changes. This magazine is a great option when performance and durability are paramount. It utilizes a T-360 coating to ensure incredible performance and product longevity through the harshest conditions.

Plus, if you’re a hunter but want to keep your mags ready, these magazines are safe for extended storage while loaded. The specific .350 rib geometry aids in reliable feeding, and ensures rounds stack correctly, even when not in use.


  • Caliber: .350 Legend
  • Capacity: 10 Rounds
  • Body Material: 400 series stainless steel
  • Spring Material: 17-7 Stainless Steel Wire
  • Follower Material: Polymer
  • Follower Color: Orange
  • 17-7 Stainless Steel Wire Spring
  • Anti-Tilt Follower
  • Finish: Matte Black
  • Made in the USA

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

CMMG Warranty

Seller warrants to Buyer that for a period of 6 months from the Delivery Date, all Goods will be:

  • Free from any defects in workmanship, material, and design
  • Conform to applicable specifications[, drawings, designs, samples and other requirements specified by Buyer]
  • Fit for their intended purpose and operate as intended
  • Merchantable
  • Free and clear of all liens, security interests or other encumbrances
  • Not infringe or misappropriate any third party’s patent or other intellectual property rights.

Inspection and Rejection of Nonconforming Goods

The Buyer has the right to inspect the Goods for a period of thirty (30) days after the Delivery Date. Buyer, at its sole option, may inspect all or a sample of the Goods and may reject all or any portion of the Goods if it determines the Goods are non-conforming or defective.

If Buyer rejects any portion of the Goods, Buyer has the right, effective upon written notice to Seller, to:

  • Rescind the Order in its entirety
  • Accept the Goods at a reasonably reduced price
  • Reject the Goods and require replacement of the rejected Goods.


If Buyer requires replacement of the Goods, Seller shall, at its expense, promptly/within 30 days replace the nonconforming Goods and pay for all related expenses, including, but not limited to, transportation charges for the return of the defective goods and the delivery of replacement Goods.

If Seller fails to timely deliver replacement Goods, Buyer may replace them with goods from a third party and charge Seller the cost thereof and terminate this Order for cause pursuant to Section 20.

Any inspection or other action by Buyer under this Section shall not reduce or otherwise affect Seller’s obligations under the Order, and Buyer shall have the right to conduct further inspections after Seller has carried out its remedial actions.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 4 reviews
Michael Harrington
Not ready out of the box

Only gave 3 stars because I had to Dremel the front of the magazines to allow clearance so the lip of the magazine doesn't catch on the straight wall case. I know 350 legend can be a real pain when it comes to feeding but this magazine is not even close to being ready out of the box be ready to do some alterations. I dremeled the front lip and got this magazine to even feed the round nose Browning 124 grain rounds that everyone complains about. These magazines are great once you alter them just wish they worked out of the box.

Errol Foreman
Happy customer

Great mag,fit and finish great,good people to do business with.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Charles L.
CMMG 10 rd. .350 Legend magazine

Well made magazine for .350 L. Excellent service from vendor and quick shipping.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

James Garris
Outstanding customer service

I could not have been happier with the service provided. Products were top quality and shipping was fast. Look forward to using again in the future. Thanks

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.