Springfield Armory Ronin 1911 | .45 ACP | 4.25in | 8-Rd | PX9118LAOS

The Springfield Armory Ronin 1911 is a two-tone, optics-ready Commander-length pistol chambered in .45 ACP with a 4.25 inch match-grade barrel. It combines a forged hot salt blued slide with a forged aluminum alloy frame finished in satin aluminum Cerakote, and ships with the Agency Optic System (AOS) to accept common red-dot footprints. For a compatible sighting solution under $1,000, the Trijicon RMR or the Holosun 507K are practical choices that pair well with the Ronin’s AOS plates and the included integral rear sight plate.

Product Specifications

• The UPC is 706397964535.
• The manufacturer is Springfield Armory.
• The model is the Ronin 1911.
• The manufacturer’s part number is PX9118LAOS.
• The cartridge is .45 ACP.
• The action is Semi-Auto.
• The barrel measures 4.25 inches and is described as a forged stainless steel match-grade barrel with a fully supported ramp.
• The barrel rate of twist is 1-in-16.
• The slide is forged carbon steel, hot salt blued and is optics-ready via the Agency Optic System.
• The frame is a forged aluminum alloy finished in satin aluminum Cerakote.
• The sights are a fiber optic front with a black serrated rear (integral rear sight included with AOS plates).
• The safety is a beavertail style safety.
• The package includes 1 x 8-round removable magazine.
• The unloaded weight is 29.5 oz.
• The overall length is 7.9 inches.

The Ronin AOS blends traditional 1911 ergonomics with modern optic compatibility. Its combination of a forged, blued slide and a Cerakote-finished alloy frame keeps the package relatively light while retaining the 1911’s familiar handling and commander-length recoil system. The included AOS plates and integral rear sight make mounting a small red dot straightforward for range use and competition-oriented carry applications.

Owners commonly praise the Ronin for its solid build quality and the convenience of factory optics integration, noting that it provides a balanced platform for shooters who want classic 1911 controls with modern sighting options.

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