This is an Anderson Manufacturing AM-15, a semi-automatic AR-15 style rifle with an extended M-LOK free-float handguard, flip-up iron sights, a multi-port muzzle brake, a 6-position adjustable stock, and a black 20-round polymer magazine, finished mostly in matte black with a gray/titanium accent on the handguard. Anderson Manufacturing AM-15 (multi-cal receiver, per markings) * Platform: AR-15 style semi-automatic rifle, standard mil-spec lower/upper receiver configuration * Manufacturer markings: "Anderson Manufacturing, Hebron, KY, AM-15, Multi Cal" * Handguard: Extended M-LOK free-float handguard with multiple oval M-LOK slots on all sides for accessory mounting * Muzzle device: Multi-port muzzle brake/flash hider * Sights: Flip-up front and rear iron sights (folded down in most photos), mounted on a top picatinny rail * Stock: 6-position collapsible/adjustable buttstock with adjustment lever * Grip: Textured black pistol grip * Trigger: Curved trigger with visible trigger guard * Controls: Standard AR-pattern safety selector marked "FIRE/SAFE," magazine release button, bolt catch/release * Magazine: Black polymer 20-round magazine inserted in the magwell * Finish: Matte black overall finish with a distinct titanium/gray colored section on the handguard and receiver area