Built around the same mechanism as the full-size SIG-556 with a "PISTOL USE ONLY" marked upper receiver. Hooded blade front sight and rail mounted Sig Sauer STS-081 red-dot sight, bird cage flash hider, ventilated ribbed forearm, ambidextrous safety and a ribbed pistol grip. With original case, extra magazine, and sight box.

Near new with 99% finish, in case with minimal light handling marks overall. Sight is excellent.