Description
The SIG Sauer P220 Legion 45 ACP is a pistol chambered in 45 ACP with a 4.4-inch barrel and a 8+1 capacity. It carries the build quality SIG Sauer is known for and is ready for carry, home defense, or the range.

SIG Sauer P220 Legion 45 ACP Overview
SIG Sauer’s classic hammer-fired pistols, including the P220, P226, and P229, earned their reputation with elite military and police units around the world. They use a smooth double-action first shot followed by light single-action shots, with a decocking lever to safely lower the hammer, or a single-action-only trigger on competition models. The rail-guided slide and robust frame make them accurate, durable, and soft-shooting.
Carry and Use
These pistols are heavier than polymer striker guns, and that weight works in your favor: recoil is soft, the sights settle quickly, and accuracy is excellent. They are favorites for home defense, duty use, and competition.
Trigger and Controls
The double-action/single-action trigger gives you a long, deliberate first pull and a short, light pull for follow-up shots. A frame-mounted decocker lowers the hammer safely without touching the trigger. Single-action-only competition models have a short, crisp trigger with a manual safety.
Sights and Optics
This model comes with a SIG ROMEO red dot already mounted, so it is ready for faster target acquisition right out of the box. A red dot lets you keep both eyes open and focus on the target, which is faster than aligning iron sights, especially in low light.
Caliber
The 45 ACP has served American shooters for more than a century. Its big, slower bullet hits hard with a recoil impulse many shooters describe as a firm push, and it remains a favorite for defense and competition.
Why SIG Sauer
SIG Sauer traces its roots back more than 150 years, and its pistols and rifles are carried by the U.S. military, federal agencies, and police departments across the country. That track record means proven designs, quality materials, and strong support for parts and accessories.
Factory Features
Here is how this model is configured from the factory:
- Legion Gray Cerakote Stainless Steel Optic Ready/Serrated Slide & Aluminum Frame with Beavertail & Picatinny Rail
- Black G10 with Legion Medallion Grip
- RMR/DeltaPoint/Sig Romeo2 Footprint
In the Field
The SIG Sauer P220 Legion 45 ACP is ready for everyday carry, home defense, and range training. Pair it with a quality holster, spare magazines, and a light and it is ready to go.
Specifications
- Model: P220 Legion Full Size Frame
- Caliber: 45 ACP
- Barrel Length: 4.4″
- Capacity: 8+1
- Manufacturer SKU: 220RM45LEGIONR2
- Distributor Item: SS 181422
- UPC: 798681673681
Learn more about SIG Sauer firearms at SIG Sauer.
Care and Cleaning
Cleaning is straightforward. Unload the pistol, field-strip it according to the manual, clean the bore with a brush and patches, wipe carbon from the slide rails and breech face, and apply a light coat of quality gun oil to the contact points. Wipe the exterior with a lightly oiled cloth before storage, and keep the optic lens clean and its mounting screws snug.
Before You Buy
Federal law requires handgun purchases to go through a licensed dealer, and buyers must be 21 or older to purchase a handgun from a dealer. Some states and localities restrict magazine capacity and certain features, so check your local laws before you order. We ship to the FFL dealer of your choice, and your dealer handles the background check and transfer.
Who It Is For
The SIG Sauer P220 Legion 45 ACP is built for shooters who want a dependable, accurate handgun from one of the most respected names in the industry.
Buy the SIG Sauer P220 Legion 45 ACP at MAG5 Firearms
MAG5 Firearms is based in Collegeville, Pennsylvania, and ships to licensed dealers across the country. Order the SIG Sauer P220 Legion 45 ACP online, choose your FFL at checkout, and we will handle the rest. You can also browse our full selection of handguns. If you have questions about accessories, our team is happy to help.







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