Prototype division is a new production line of SRU brand.

SRU apply 3D-weaving technology on manufacturing. This way leads concepts boom out with no limitation, also makes it much more faster to push theses amazing ideas from SRU design house into the market.

SRU AR BULLPUP Conversion Kit For M4 AEG Rifle
3D Printing Technology Bullpup kit
Include Handguard ,Frame ,Pistol Grip & Stock
Innovation Shape & Detail Marking
Designed for TM/G&G/KSC/KWA/CYMA/ICS Standard M4A1 Airsoft AEG Rifle
Versatile configurations for CQB or Personal Defense Operation