SN: LTS11505. Modern production, 5.56 NATO with an 18″ barrel w/Larue TranQuilo QD muzzle brake. Bore is excellent. Semi-auto tactical rifle with a Sig ROMEO5XDR green dot optic, co-witnessed front & rear flip-up sights, picatinny accessory rails, matte black finish, and OD green pistol grip & collapsible stock. Overall condition is excellent. Includes sling.