You need to start your Airsoft battles prepared. One of the accessories you should bring is this WE-Tech drum magazine.
It works great with your M4 gas-blowback rifles. The stock magazines of these weapons already hold lots of rounds, but you can add an extra 400 with this item. Best of all, the ammo is easy to load into your gun thanks to a straightforward feeding system.
The magazine is made of high-quality polymer, whereas the stem is metal.

Features:

• Efficient Feeding System
• Color: OD Green
• Polymer Frame
• Metal Stem
• Capacity: 400 Rounds
• For M4 Gas-blowback Rifles