Lancer L5AWM 'Warfighter' magazines, black opaque. Website shows current stock at 2700+. $12 is a good price anytime. Now... and in stock... phenomenal.
https://botach.com/lancer-l5awm-5-56mm-30rd-magazines-black/
https://botach.com/lancer-l5awm-5-56mm-30rd-magazines-black/