The prototype division is a new production line of the SRU brand.
SRUs apply 3D printing technology to production. This method leads to the expansion of concepts without restrictions and also allows for the much faster promotion of these amazing ideas from SRU designers.
Compatible with GBB rifles from Tokyo Marui/WE/KSC/GHK/Viper/VFC type M4 / AR15.
The package contains 1 piece of stock and 1 piece of handle, but does not contain a weapon.