![[SHS] 13:1 M4 Gear Set + 15 Steel Teeth High Quality Piston Set [For Version.2 Gearbox]](http://www.asiaairsoft.com/cdn/shop/products/1305_SHS_13_1_M4_Gear_Set_15_Steel_Teeth_Piston_Set_1024x1024.jpg?v=1628230492)
![[SHS] 13:1 M4 Gear Set + 15 Steel Teeth High Quality Piston Set [For Version.2 Gearbox]](http://www.asiaairsoft.com/cdn/shop/products/1305_SHS_13_1_M4_Gear_Set_15_Steel_Teeth_Piston_Set_480x480.jpg?v=1628230492)
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