I just bought a JG/GB AK-B Spetsnaz off EBay.com for about 40$ from the seller airsoftclearance. He claims it is a Jing Gong/Golden Bow gun. It has alot of metal on the body, comes with a 8.4Volt battery. There is a V3 gearbox version in the newer JG models. But in this is states it has a plastic gearbox firing around 260+ fps. Now, has ANYONE had this model before.. I pretty much already bought it so I am stuck with it. And if it breaks, i'll put it up as a eyecandy.

If you got a JG AK-B Spetsnaz, it should feature a metal gearbox. You might want to open it up and check the gearbox to see if the seller ripped you off. If the gun has a good weight to it, most likely it has a metal gearbox, unless extra weight was added (highly unlikely). Good luck.

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Purple Airsoft
http://www.purpleairsoft.com