3 receiver assembly, 4 hand guards, 5 trigger casing assembly – SIG SAUER SIG522 Rifle User Manual

3 receiver assembly, 4 hand guards, 5 trigger casing assembly | 6 manual safety, 7 sights, 8 magazine, Warning - sights, Unload pistol before manipulating sights | SIG SAUER SIG522 Rifle User Manual | Page 9 / 31