The Rock Island Armory STK100 Ultra HC is a versatile and durable 9mm pistol designed for precision and reliability. Featuring a 4.5-inch barrel and a modular aluminum frame, it offers excellent strength while maintaining a lightweight profile. The optic-ready slide includes lightening cuts and serrations for improved handling and compatibility with red dot sights. With a 17-round capacity, ergonomic grip design, and durable Parkerized finish, the STK100 delivers exceptional performance for both professional and recreational shooters.