Does anyone know of a 9mm AR conversion that uses MP5 mags?

[Dragshooter]

I really like the functionality of MP5 magazines. are there any uppers out there or conversions that use these magazines?

[deth502]

dont know, but i wouldnt think.

most ive seen, if they dont use propritary mags, use something thats cheap and common, mp5 mag arent that cheap.