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Yes, the CMMG, Inc AR-15 Magazine Catch Parts Kit will be compatible with an Aero M5E1 lower receiver because the magazine catch between both DPMS .308 and AR15 platforms are interchangeable.
Over the years I've used numerous parts from CMMG. While some fads and manufacturers come and go it seems like CMMG has and will be a consistent supplier of no nonsense product.
I needed a mag catch for a new build and went with the tried and true CMMG mag catch. I've used this mag catch on a ton of builds and it hasn't failed me yet. The only nitpick I have is I wish the button was aluminum instead of plastic but not a deal...
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I needed a mag catch for a new build and went with the tried and true CMMG mag catch. I've used this mag catch on a ton of builds and it hasn't failed me yet. The only nitpick I have is I wish the button was aluminum instead of plastic but not a deal...
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Replaced my original magazine catch with this product because my mag kept falling out the weapon every time i shot it. Since replacement I’ve had no issues and I’m about 300 rounds in. So far so good.