Replica Air Guns

G&G ARP 9 Battery Extension Unit

(1 reviews)5.0
Out of Stock
$ 33.20

Total: $33.20

After installing the LiPo battery in the stock compartment, we encountered challenges in fitting the MOSFET, fuse, and wires back in without risking damage from overbending, which could weaken the circuit over time. Additionally, our aim was to reduce the likelihood of damaging the battery's exterior due to the tight space. The Battery Extension Unit (BEU) is innovatively designed to alleviate these concerns by providing extra room in the compartment, thus reducing stress on the ARP9's internal components and enhancing their lifespan. The BEU includes strategically placed crevices on each side to ensure steady air circulation around the battery and components, effectively preventing heat accumulation. The design of the BEU integrates flawlessly with the ARP9's original structure, fitting effortlessly into the stock compartment without requiring any modifications for installation. It is constructed from robust, flexible nylon material, ensuring resilience against BB impacts and rough handling.


  • Eases the cramped space for the MOSFET and wires, preventing them from being overbent and damaged.
  • Facilitates the use of larger batteries, especially beneficial for those using the G&G drum mag in a support role.
  • Stabilizes the butt-stock by securing the two metal rails.
  • Accommodates a maximum battery size of approximately 152mm in length, 19.5mm in width, and 11.75mm in height.
  • Preserves the compact size of the ARP9/556 post-installation, making it ideal for close-quarters combat.
  • Also compatible with the G&G CM16 Raider L 2.0 E.

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Aug 11, 2020


If you buy the arp9, this is literally a key accessory! If you don’t have this you’ll have troubles with your battery and wiring fitment, and it also reduces the shake in the stock when it’s fully extended
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