Mosquito (open beta V2) Top Battery Compartment

Hello everyone,

I'd like to present my Mosquito Custom N1Solution:

I started from the Mosquito V2 base, an open source 3D printable replica (https://www.printables.com/model/564524-mosquito-airsoft-kit-open-beta-2) whose designer's work is remarkable.
As in many cases with airsoft replicas, the location of the battery is a constraint that must be taken into account in the final design of the replica. Generally speaking, the battery is placed in the stock, upper or handguard of the replica, but in the case of the Mosquito V2, the original designer had planned to place it in the stock or in the silencer.
I'm particularly in favor of locating the battery in the upper, as this gives the replica a better balance and greatly reduces its size (e.g. MP5, AKSU, UMP45, M4 CCR), so I decided to design a battery location on the upper of the replica.
The 2 constraints were :
- the size of the battery, as I had to take into account the standard size of batteries used in replicas with this architecture (long stick).
- The accessory would have to be mounted on the original replica with minimum modification.
Taking my inspiration from the M4 CCR, I designed a housing that can be used on the replica's picatinny rail, on the "Front_Housing" part, and by adding space at the rear of the replica. This housing mounts directly onto the original replica, and requires only minor modification to the "Receiver" for gearbox cable routing (3D files of the modified "Receiver" are also available).
The size of the battery, the extra wires and the socket meant I had to make a block to slightly extend the rear of the replica to accommodate everything, giving it that unintentional Warhammer40K "Bolter" look (hence the oversized flash hider). 
This block still allows the replica's original stocks to be mounted with m3x40 screws, and also allows a picatinny/1913 rail or QD sling attachment to be fitted.
A little N1 Solution touch: fiber-optic sights integrated into the upper picatinny rail.