10 round pistol mags

Most places are sold out since the BCL102 and more recently the Stag-10 release. You'll just have to keep checking with retailers or watch the EE for them.
 
So I purchased 4 XCR-M pistol mags and they will not work in my Stag 10. The magazine catch won’t hold. I measured the diameter, and the XCR mags are about 20/1000” narrower. Anybody else encounter this?
 
So I purchased 4 XCR-M pistol mags and they will not work in my Stag 10. The magazine catch won’t hold. I measured the diameter, and the XCR mags are about 20/1000” narrower. Anybody else encounter this?

Yes.
Get the TNA Norgon style magazine catch. It protrudes a little further and holds the XCR mags snug. At least mine does and also stays clear of my Phase 5 bolt release. I got this one....

https://truenortharms.com/ar15_default_store_view/ambi-mag-release-w-maple-leaf-v2-0.html
 
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