THE SIGM400 SERIES HUNTER RIFLE, is designed for use in the sporting field, as well as competitive shooting. The SIGM400 Hunter is a true AR platform sporting rifle with unparalleled accuracy. A 20" phosphate coated match grade barrel provides superior corrosion resistance, and a 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability that users come to expect from SIG SAUER.