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CMMG, Inc AR-15 .350 Legend Magazine
$42.56 $29.89 Save 30%
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Most Helpful Positive Review Top Notch magazines
These magazines are well made,all metal except for the follower easy loadong for my 350 Legend. I was happy to see all metal fit, no plastic and hardened steel. I recommend these to anyone that wants quality and no hassel magazines for AR-15 style.
Most Helpful Negative Review Bowed and jams
I bought 2 5 round mags. Both bowed and hard to insert into any lower. Can not load a round any way you try. Other mags work in my build, these do not! Im not sure what happened. I see mixed reviews on this product. But 5 round mags are hard to find. This product is not the one. Waste of $56.
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My 350 Legend came with a 10 bullet magazine. Needed 5 for compliance with hunting regulations.

by Foss1lhunter, Verified Owner from OK, United States Written on March 13, 2025
CMMG offers great value and their magazines are well made and function great!
Pros:
  • Grea price
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Poor customer service from CMMG

by Mike, from MD, United States Written on February 26, 2023
I have both the 10 and 20 round magazines.
10 round unit has an anti-tilt follower and feeds great. The 20 round units do not and so they do not feed properly. I swapped the followers between the 2 units and the feeding issue followed the shorter follower. I contacted CMMG customer service... they were quick to respond but offered no solution to fix the issue. They wouldn't even sell me the 10 round followers separately. I had to purchase some followers marketed for 223/5.56 to fix my issue.
So, if you're having feeding issues with their 20 round mag, buy some of the anti-tilt units offered by another manufacturer (hint, they offer them in Yellow or Green). Unfortunately, they only hold 16 rounds now, but they work.
If they offerrd a 30 round magazine, you'd probably need to fix them too.
You'll end up with a 26 round mag but it will work ���.
Would recommend: Yes
Was it helpful to you? Yes | No

Body bend/bowed out on numerous mags

by OIR20, from IA, United States Written on April 4, 2021
The body on the 20rd CMMG 350L mags bow out, seems not to be as big of an issue with the shorter 10rd mags but I have a number of CMMG mags now that are useless and cause failure to feed. Some 10rd CMMG mags did it on me as well.
Pros:
  • None
Cons:
  • Mags fail
Best Used for:
  • Tossing in trash
Would recommend: No
Was it helpful to you? Yes | No

best in class

by freedombirdies, Verified Owner from IA, United States Written on February 14, 2021
I will never build another 350 AR without CMMG mags to go with it. The anti-tilt follower is superb. Cheap alternatives come with guaranteed failures to feed. Don’t do it. CMMG is simply the best of the 350 mag makers.
Would recommend: Yes
2 of 2 found the following review helpful.
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350 legend mags

by Joe Mobley, from NC, United States Written on December 8, 2020
Ordered them on November 9th shipped on December 5, I suppose due to covid,iv used optics planet many times before never with this problem,iv since ordered a handguard i hope it will ship guicker.Over all im satisfied with this company have been using them for years.
Would recommend: Yes
Was it helpful to you? Yes | No

Cmmg Magazine

by JJ, from MO, United States Written on March 22, 2020
Magazine is well made and fit my custom 350 Legend perfectly. It installs easily and ejects without any hang up or other problems. The magazine has a hard black finish and will not scratch easily. Bullets load and unload easily.
Would recommend: Yes
1 of 1 found the following review helpful.
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350 legend Magazine

by Tim, from OH, United States Written on March 5, 2020
The product is great quality nice finish. Exactly what I expected, functions properly fits in the magazine well perfect. When I ordered the magazine I also ordered some other items. All items showed they were in stock. After the completion of the order I got a email that was vague didn’t really tell me much. After a week went by I emailed optics planet to see what was going on because the items haven’t shipped yet. They sent another email that didn’t exactly explain what was going on. It took almost three weeks to get the items. The shipping was free but if I had known it was going to take 3 weeks I would have paid for shipping or ordered from another site.
Pros:
  • Good product
Cons:
  • SLOW shipping
Would recommend: Yes
1 of 1 found the following review helpful.
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Cmmg 350 legend mag

by Danbo, from NM, United States Written on December 13, 2019
The magazine works great, no hiccups and is well made. A perfect addition to my new straight wall 35 cal. Waiting for the twenty round one to come out. What else to say as all Cmmg products I have seen and used have been top shelf. Wish I could afford their rifles.
Would recommend: Yes
1 of 1 found the following review helpful.
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350 Legend magazine

by TMB, from OH, United States Written on October 13, 2019
Seems well built. Only reason didn’t put 5 stars is I haven’t used it yet to verify proper feed in rifle because my build is not complete yet. But, spring seems stiff and shells load properly the way they are supposed to.
Would recommend: Yes
0 of 10 found the following review helpful.
Was it helpful to you? Yes | No
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