Features a 9310 Bolt and Carrier Material; Chrome lined carrier and gas key; Properly staked Investment cast gas key hardened to USGI specifications fast with Hardened Grade 8 Fasteners; Shot peened MPI (Magnetic Particle Inspected) Bolt. This is an Excellent Bolt and an Excellent Price! $99.95 free shipping.seems like a really good price to me. They are running other Labor Day specials too.