SIG SAUER P220 LEGION .45 ACP DA/SA Optic-Ready Pistol

SIG SAUER P220 LEGION .45 Auto DA/SA Optic-Ready Pistol

The SIG SAUER P220 LEGION .45 Auto builds on the all-metal P220 platform with the controls, grip treatment, sights, and action enhancements associated with the LEGION series. This full-size configuration uses a traditional double-action/single-action operating system with a decocking lever, pairing the first-shot double-action pull with subsequent single-action operation. Its single-stack magazine design and .45 Auto chambering preserve the familiar P220 format while the optic-ready slide supports a modern sighting setup.

This listing is for manufacturer part number 220R45LEGIONR2, UPC 798681662982. It includes three 8-round steel magazines for an 8+1 capacity when a round is chambered. The pistol has a 4.4-inch carbon-steel barrel, a stainless-steel slide, and an alloy frame finished in LEGION Gray.

Enhanced DA/SA Controls and Trigger

SIG equips the DA/SA P220 LEGION with an enhanced polished action, a Short Reset Trigger, and a Grayguns-designed P-SAIT trigger. The low-profile decocking and slide-catch levers are shaped to reduce snag points while keeping the traditional P-series control layout. A reduced and contoured Elite beavertail supports a high grip without the extended profile of a competition-style beavertail.

The grip area receives several functional refinements. Aggressive frontstrap checkering and additional checkering beneath the trigger guard provide added texture, while an X-Five-style undercut allows the shooting hand to sit higher on the frame. Black G10 grip panels with a LEGION medallion complete the interface and complement the gray finish.

Optic-Ready Slide and Day/Night Sights

The stainless-steel slide is factory optic ready with SIG’s PRO footprint. No electro-optic is included with this configuration, allowing the owner to select a compatible sight separately. Factory-installed X-RAY3 day/night sights remain available as a durable iron-sight system, providing a high-visibility front reference in daylight and tritium illumination in low-light conditions.

Front cocking serrations add purchase for routine slide manipulation and inspection. A SIG accessory rail on the frame provides a mounting point for compatible lights or other rail-mounted accessories. The solid steel guide rod is another LEGION-series detail that adds durability and additional mass toward the front of the pistol.

Key Features

• Caliber: .45 Auto
• Action: Double action/single action with decocker
• Barrel: 4.4-inch carbon steel
• Capacity: 8+1
• Magazines: Three 8-round steel magazines
• Slide: Stainless steel with LEGION Gray finish and front serrations
• Optic interface: Factory optic ready with SIG PRO footprint
• Sights: X-RAY3 day/night sights
• Frame: Alloy frame with SIG accessory rail
• Grips: Black G10 with LEGION medallion
• Trigger system: Enhanced action, Short Reset Trigger, and P-SAIT trigger

A Refined Full-Size P220 Configuration

This model is suited to shooters who want the established P220 platform with a traditional DA/SA control system and current optics compatibility. The full-size alloy frame offers the substantial feel of an all-metal handgun, while the checkering, undercut trigger guard, and contoured beavertail are intended to improve purchase and control. The combination of iron sights and an optic-ready slide also lets the pistol be used in its factory configuration or equipped with a compatible red-dot sight.

Manufacturer-Published Size and Weight

SIG SAUER lists the pistol at 7.7 inches in overall length, 1.3 inches in overall width, and 5.5 inches in height, with a listed weight of 30.4 ounces. These are the manufacturer’s firearm dimensions; any larger measurements shown in shipping data refer to packaging rather than the pistol itself. The full-size proportions provide a long sight radius and room for a full firing grip, while the alloy frame keeps the pistol lighter than an equivalent all-steel design.

The supplied magazines are steel, single-stack, 8-round P220 magazines. The optic-ready slide uses the PRO footprint, so buyers should confirm the exact mounting requirements of their chosen optic and whether a separate plate or hardware is required. The factory X-RAY3 sights remain installed for use without an optic and may serve as backup references with compatible sighting systems.

As with any firearm, confirm optic, holster, and accessory compatibility before use. Read the owner’s manual, follow all safe-handling practices, and comply with applicable transfer, possession, and magazine-capacity laws.