![[SHS] 13:1 M4 Gear Set + 15 Steel Teeth Piston [Version.2 Gearbox]](http://www.asiaairsoft.com/cdn/shop/products/SHS_131M4GearSet_15SteelTeethPiston_Version.2Gearbox_1024x1024.jpg?v=1628230489)
![[SHS] 13:1 M4 Gear Set + 15 Steel Teeth Piston [Version.2 Gearbox]](http://www.asiaairsoft.com/cdn/shop/products/SHS_131M4GearSet_15SteelTeethPiston_Version.2Gearbox_480x480.jpg?v=1628230489)
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