Built around the same mechanism as the full-size SIG-556, with a "PISTOL USE ONLY" marked upper receiver. Hooded blade front and flip-up peep rear sights, with a bird cage flash hider, ventilated quad rail forearm, ambidextrous safety and a ribbed pistol grip. With inspector hang tag and Sig paper grip tag.

Excellent, with 98% plus original black finish, showing some light handling marks overall. Mechanically excellent.