Ace, thanks, good spot. "M16VN" also turns up (one) box of 7 mid caps on Amazon, but that's coming from China and therefore also subject to delay and Border Farce ramping up the cost (and then stamping on them anyway).
I've settled on buying one short hi-cap from Bullseye (unhelpfully listed as M-series PMAG rather than M4/M16/AR15) to tide me over, plus set up stock alerts at PatrolBase for the post pandemic future.
One of the reasons that I've cobbled up an M4 DMR is that I blithely assumed that M4 parts and particularly mags would be more readily available than SR25 or M14. Oh, airsoft, you're so fickle.
I've settled on buying one short hi-cap from Bullseye (unhelpfully listed as M-series PMAG rather than M4/M16/AR15) to tide me over, plus set up stock alerts at PatrolBase for the post pandemic future.
One of the reasons that I've cobbled up an M4 DMR is that I blithely assumed that M4 parts and particularly mags would be more readily available than SR25 or M14. Oh, airsoft, you're so fickle.
https://airsoftpro.cz/en/magazines/for-electric-aeg-guns/for-colt/zasobnik-pro-m4-m16-na-190-ran-cerny-detail
EDIT
sorry, just noticed, it's a hi cap
Evike has them if you don't mind waiting and probably import fees
https://www.evike.com/products/29857/