G&G ARP 556 is a combination of ARP 9 2.0 and ARP 556.
- 7 inch Metal M-LOK Rail
- G&G SR Polymer Receiver
- Pre-Installed ETU and MOSFET with Battery Protection and Programmable 3 Round Burst
- 168mm Inner Barrel
- Includes 300R HiCap Magazine
- Includes GOS-V9 PDW Stock
- Includes Detachable M-LOK Hand Stop