SIG SAUER P220 LEGION SAO Optic-Ready .45 ACP Pistol

The SIG SAUER P220 LEGION SAO .45 ACP pairs the classic single-stack P220 platform with LEGION-series appointments, a single-action-only operating system, factory night sights, and an optic-ready slide. Finished in LEGION gray with black G10 grips, this full-size pistol includes three 8-round steel magazines and a 4.4-inch barrel. This exact configuration is manufacturer part number 220R-45-LEGION-SAO-R2 (stored as 220R45LEGIONSAOR2), UPC 798681662999.

Single-Action-Only LEGION Configuration

This P220 is the single-action-only version, not the more common double-action/single-action configuration. Its trigger system is intended to provide the same single-action press for each shot, and the pistol incorporates a manual thumb safety appropriate to that operating system. Buyers should understand the controls and handling procedure of an SAO pistol before choosing it for defensive use. The current SIG SAUER operator’s manual and qualified instruction are the proper references for loading, unloading, safety use, carry condition, and maintenance.

The dedicated SAO system is a central part of the model’s identity. It appeals to shooters who value a consistent trigger feel and are comfortable training with a manual safety. Safe operation depends on deliberate handling: keep the trigger area clear, use a rigid holster that completely covers the trigger guard, and practice the safety and draw sequence only in an appropriate training environment.

.45 ACP P220 Platform

The P220 is built around a single-stack magazine and is chambered here in .45 ACP. This model uses a 4.4-inch barrel, giving it full-size proportions suited to range work, defensive training, or lawful home-defense use. The steel slide and metal-frame architecture provide the substantial feel associated with the traditional P220 family, while the LEGION treatment distinguishes the configuration from standard-production variants.

Grip fit, control reach, and recoil perception differ from one shooter to another. Prospective owners should confirm that they can safely reach the trigger, thumb safety, magazine release, and slide controls. Ammunition selection should follow SIG SAUER guidance, and any defensive load should be evaluated for reliable operation during controlled practice.

LEGION Gray Finish and Black G10 Grips

SIG SAUER identifies this model with a LEGION gray finish and black G10 grip panels. The grip material provides a firm, textured contact surface and complements the pistol’s understated gray-and-black appearance. LEGION branding and detailing mark it as part of SIG’s upgraded series without changing the core P220 layout.

Textured grip panels can feel more or less aggressive depending on hand size and skin sensitivity. Owners should also consider how the grip and controls interact with a chosen holster and clothing. A model-specific holster should retain the pistol securely without contacting the trigger or unintentionally moving the thumb safety.

Optic-Ready Slide and XRAY3 Night Sights

The serrated slide is optic ready, allowing the owner to install a compatible pistol optic after verifying footprint, mounting hardware, plate requirements, and torque values. An optic is not included with this SKU. Factory XRAY3 day/night sights provide a complete conventional sighting system, so the pistol is ready for iron-sight use and remains functional if the owner elects not to add an electronic sight.

Any installed optic should be checked for secure mounting and proper function according to its manufacturer’s instructions. After installation, confirm zero and reliability during controlled range use before relying on the completed setup.

Three 8-Round Steel Magazines

SIG SAUER’s exact catalog entry specifies three 8-round steel magazines. The three-magazine package provides a useful working set for practice, lawful carry, or secure storage without an immediate magazine purchase. Replacement magazines should be verified for the .45 ACP P220 platform and the exact base-pad and fit requirements of this pistol.

Key Specifications

• Manufacturer: SIG SAUER
• Model: P220 LEGION SAO
• Manufacturer part number: 220R-45-LEGION-SAO-R2
• UPC: 798681662999
• Caliber: .45 ACP
• Action: Single-action-only semi-automatic
• Barrel length: 4.4 inches
• Capacity: 8 rounds
• Magazines: Three 8-round steel magazines
• Finish: LEGION gray
• Grips: Black G10
• Sights: XRAY3 day/night sights
• Slide: Serrated and optic ready
• Safety: Manual thumb safety
• Optic included: No

Before Ordering

Firearm, transfer, possession, and carry laws vary by jurisdiction. This pistol must be transferred through a qualified dealer where required, and the buyer is responsible for confirming eligibility and applicable restrictions. Review the MPN, UPC, SAO action, and manual-safety configuration carefully so it is not confused with a DA/SA P220 LEGION.

Before first use, read the current owner’s manual, inspect and maintain the firearm as directed, and obtain qualified instruction if the single-action operating system is unfamiliar. Always keep the muzzle pointed in a safe direction, keep your finger off the trigger until ready to fire, treat every firearm as loaded, and know the target and what lies beyond it.