At first glance, they look like ordinary electric boxes made of plastic.
They have a quick-release front part, which gives the ability to fill them "like a bucket" and give access to a standard 9V battery (6LR61, 6F22, ER9V, 6LP3146).
A new window in the back allows to make a rough estimate how many BBs are left in the magazine (the large red arrow).
Smaller arrows indicate a button for winding the magazine and an additional socket for the gel button (included).
The magazine's capacity is around 1800 BBs.
They are available in two different colors: black (MC-239) and tan (MC-241).
A unique feature of the design are the removable adapters available as separate accessories for various types of replicas. Standard magazines are sold with an adapter for AR-15 rifles replicas (or ones using their magazines). Adapters for AK/Galil replicas are also available:
and SIG Sauer replicas:
and also MP5 replicas:
A standard adapter for the AR-15 looks like this:
Each adapter has a hi-cap type cap that can be used when refilling BBs. Those additional BBs located in the adapter increase the total magazine capacity to about 2000 BBs.
Of course, the adapters are also made in the tan colour:
Prices (without shipping and additional fees):
in Asia: magazines 75 USD, adapters 10 USD - (Octagon Airsoft)
in Europe: magazines 90 €, adapters 10 € - (Begadi)
