This jm gen8 gearbox shells is compatible with for the new verison JinMing J8 M4A1 gel blaster with semi/auto fire modes or the older verions which is only with full auto shooting mode.
Specifications:
Brand: JM. Material: nylon. Color: black. Compatibility: new or old jm j8 gel blaster. SIze: 20*8*2cm. Weight: 85g.
Package Contents:
1x jinming gen8 gearbox shell. 1x nylon t-piece. 1x motor holder. 1x spring retainer.
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