ARP 9 3.0P
4.5 inch Polymer M-LOK Rail with Polymer SR Receiver
MOSFET Integrated Gearbox (MIG) with Quick Change Spring Guide
6.08mm Inner Barrel
Rear-Wired CHFS Folding Stock
Includes 68 Round FCCM Magazine (G-08-213), Low Profile QD Sling Swivel (G-05-012-1)