This listing is for an Armalite pattern handgun chambered in 5.7X28mm. The lower receiver is from Aero Precision and the upper is an AR57 upper that feeds from P90 magazines. It also has a Truglo red dot, Roger’s mag grip, Shockwave blade pistol stabilizer, and an open ended magazine that functions as an ejection chute.
4 X 50 round magazines are included.