Looking for some midcaps for your M4/M16? Check this out Airsoft Skirmish... "An economical set of plastic molded magazines. High quality plastic is durable and rigid. Solid M16 magazines fit Marui and other branded M16 AEG series. Constructed by sturdy ABS plastic. 100rds capacity. No winding necessary. Economical enough that you can drop and reload mags as in real life, and not lose a fortune if you can't find the dropped magazines later!"