AR Five Seven Center 12" AR15 Pattern Upper Receiver Assembly (5.7x28mm)
This AR Five Seven Center AR-15 pattern upper is chambered in 5.7x28mm and built around the platform’s top-mounted 50-round feeding system. The 12" configuration uses a free-floating barrel and an aluminum receiver with a black finish (type not specified), with M-LOK rail coverage for accessory mounting.
Included with this unit are two 50-round P90 pattern magazines.