Not sure how good these are but given the price might be worth a try.

Mora Arms MP5 Magazine 30 Round Steel Chrome Follower

Mora Arms MP5 Magazine 30 Round Steel Chrome Follower - now available at War Pig Armory! Steel body. Made in Taiwan. Chrome Follower!

warpigarmory.com

I purchased some from Classic Arms and Atlantic Firearms. They are as good or better than the MKE mags in my opinion. There is another thread on HKPro that was started a couple of weeks ago.

 

I had great experience with them.

Heres another thread with more info.

https://www.hkpro.com/threads/anyone-have-experience-with-these-taiwanese-mp5-magazines.590408/#replies