Realistic Ambi M4 mag catches - can not find the one I'm after!

[dave38x]

Afternoon chaps and chapesses,

I've been searching for an ambidextrous mag catch for my M4 for a while, however, the specific requirements im after are... rather pedantic, and I've yet to come across one that fits the bill.

Basically, the things I'd like in this mag catch are:

• Ambidextrous, same type as the Prime Ambi CNC Mag catch for PTWs/WA M4s, but for an AEG
• Made of steel
• Comes apart like an RS mag catch (again like the prime one) - sick of pot metal stripping tiny pansy screws.

So far I've found steel mag catches with RS style take down for AEGs, and Ambi mag catches made of pot metal with a bolt takedown. I've searched all of the retailers I regularly use, to no avail - it might be that I'm using the wrong search terms though!

Does anyone know if a mag catch fitting this spec exists?