SIG SAUER P220 LEGION .45 ACP DA/SA Pistol

SIG SAUER P220 LEGION .45 Auto DA/SA

The SIG SAUER P220 LEGION is a full-size, all-metal .45 Auto pistol that builds on the classic single-stack P220 platform with LEGION-series controls, grip treatment, sights, and finish. This 220RM45LEGIONR2 configuration uses SIG SAUER’s traditional double-action/single-action operating system and is cataloged as a Massachusetts-compliant model. It combines an 8+1 capacity with a 4.4-inch barrel and includes three 8-round steel magazines.

The first trigger press operates in double action, while subsequent presses operate in single action after the slide cycles. A low-profile decocking lever safely returns the hammer from the cocked position without requiring a trigger press. The reduced-profile slide-catch and decocking controls are designed to minimize snagging while remaining accessible during normal handling.

LEGION Ergonomics and Construction

The frame is made from aluminum alloy and finished in LEGION Gray, while the stainless-steel slide receives the same subdued gray treatment. A black carbon-steel barrel with a durable DLC finish complements the corrosion-resistant exterior. Custom black G10 grips carry the LEGION medallion and provide a secure, textured gripping surface.

SIG SAUER shapes the frame with a reduced and contoured Elite beavertail, an X-Five-style undercut beneath the trigger guard, aggressive front-strap checkering, and additional checkering under the trigger guard. Together, these details allow a high, consistent grip and provide positive contact without adding unnecessary bulk. Front and rear slide serrations offer useful purchase for routine loading, unloading, and inspection.

Optic-Ready Sighting System

The optic-ready slide is cut for the SIG ROMEO2 footprint as specified for this configuration. XRAY3 day/night sights are installed from the factory, supplying a high-visibility front reference in daylight and tritium illumination in low light. The iron sights remain ready for use without requiring an optic, while the slide cut gives the owner the option to configure the pistol with a compatible red-dot sight.

Before selecting or installing an optic, confirm the mounting footprint, required screws, and any adapter requirements with SIG SAUER and the optic manufacturer. Installation should follow the published torque values and instructions for the specific sight.

Balanced Full-Size Dimensions

The P220 LEGION measures approximately 7.7 inches long, 5.5 inches high, and 1.3 inches wide, with an unloaded weight of about 30.4 ounces. Its full-size proportions and 4.4-inch barrel provide a familiar balance for range use, training, collection, and lawful defensive ownership. The single-stack magazine keeps the grip profile relatively slim for a full-size .45 Auto pistol.

Key Features

• Caliber: .45 Auto.
• Action: Double action/single action with decocking lever.
• Capacity: 8+1 rounds.
• Barrel: 4.4-inch carbon-steel barrel with black DLC finish.
• Slide: Stainless steel, LEGION Gray finish, front and rear serrations, optic ready.
• Frame: Aluminum alloy with accessory rail, undercut trigger guard, and reduced Elite beavertail.
• Grips: Black G10 panels with LEGION medallion.
• Sights: SIG SAUER XRAY3 day/night sights.
• Magazines: Three 8-round steel magazines.
• State configuration: Massachusetts-compliant catalog model.

Product Identification

• Manufacturer: SIG SAUER
• Model: P220 LEGION
• Manufacturer part number: 220RM45LEGIONR2
• UPC: 798681673681

This P220 LEGION configuration is intended for buyers who want the established P220 DA/SA system with factory LEGION enhancements, an optic-ready slide, premium grip treatment, and a complete three-magazine package. Firearm transfers, possession, and magazine rules vary by jurisdiction; buyers should confirm current eligibility with their receiving FFL before ordering.