Springfield Armory

The Ronin® AOS 4.25" blends strength, reliability, and quality in a lightweight 9mm design. Its forged alloy frame keeps the weight around 30 ounces for easy carry, while the 4.25" barrel features a traditional barrel bushing system. The forged hot salt blued slide and stainless steel hammer-forged barrel ensure long-lasting durability. Enhanced with AOS, the Ronin now accommodates modern optics, employing plates that fit a wide range of popular models like RMR, Shield, Delta Point Pro, and Docter. Each plate includes an integral rear sight, ensuring proper optic height, an intuitive sight picture, and visible co-witnessing in nearly all configurations. The Ronin AOS 4.25" offers a perfect fusion of classic design and modern functionality.

The Ronin AOS features a two-tone finish, with a stainless steel forged frame and forged carbon steel slide with a beautiful hot salt bluing treatment.

Developed in collaboration with Agency Arms, AOS employs a series of plates fitting a wide variety of today’s most popular optics. The Ronin AOS Ships with a cover plate.

The 4.25-inch stainless steel barrel of the Ronin AOS is forged and suited for concealed carry.