30 round gas version 2 magazine for the VFC system gas blow back M4; fits the SOCOM Gear Gas M4. This version is more reliable and will go through more BBs and less cooldown if you do decide to go crazy in full auto. The steel housing adds good weight, realistic feel and not only resistance to wear but eventual wear and tear will add a real environment-on-steel worn look.
Disclaimer: All aftermarket upgrade parts require necessary skill or modification to install and assemble, please consult with your airsoft technician if needed.