This 5.7 Carbine features a 16″ threaded barrel” adjustable sights” side cocker” and scope mount.
MasterPiece Arms MPA5700DMG, Semi-automatic Rifle, 5.7x28mm, 16″ Threaded Barrel, Black Finish, EVG Grip, 20Rd, Side Cocker, Scope Mount, Adjustable Sights, Trigger Tech Special Trigger MPA5700DMG