Description
The P220 has been SIG's flagship big-bore since the mid 1970s, and this Legion version chambers it in 10mm Auto, a cartridge that finally gives the platform the horsepower to match its reputation. The recipe here is simple: take a proven full-size hammer gun, wrap it in Legion Gray Cerakote over a stainless steel slide and frame, and refine every touchpoint. At 44 ounces with a 5 inch barrel, this pistol has the heft to make full-power 10mm loads feel far more civilized than they do out of lighter polymer guns. That matters if you plan to shoot it a lot, and with a trigger this good, you will.
What Makes the P220 Legion Different
This is the DA/SA version, running a P-SAIT trigger with a frame-mounted decocker rather than a manual safety. You get the classic SIG manual of arms: a deliberate first double-action pull, then crisp single-action follow-ups. The X-RAY3 day/night sights are some of the best factory irons in the business, with a bright green front dot in daylight and tritium glow after dark. The slide is also cut for a red dot, so you can mount an optic without a trip to a machinist. Front cocking serrations, aggressive front strap checkering, extra checkering under the trigger guard, a solid steel guide rod, and a reduced Elite beavertail round out the upgrades, along with checkered black G10 grips wearing the Legion medallion.
Where the 10mm P220 Legion Earns Its Keep
The 10mm chambering makes this a natural for backcountry carry, hog hunting, and anyone who just appreciates a serious cartridge in a serious gun. Eight rounds of 10mm on tap, with 8+1 total capacity and three 8-round steel magazines included, gives you plenty to work with at the range or in the woods. It is a lot of pistol in the best sense, built to run hard loads for years and backed by SIG's no-questions Infinite Guarantee.
Key Specifications
- UPC: 798681663002
- Manufacturer Part Number: 220R5-10-LEGION-R2
- Model: P220 Legion
- Caliber: 10mm Auto
- Action: DA/SA, hammer-fired
- Trigger: P-SAIT with frame-mounted decocker
- Capacity: 8+1
- Barrel Length: 5"
- Overall Length: 8.8"
- Height: 5.5"
- Width: 1.3"
- Weight: 44 oz
- Sights: X-RAY3 day/night sights, optic-ready slide
- Grips: Black G10 with Legion medallion
- Finish: Legion Gray Cerakote
- Frame Material: Stainless steel
What’s Included
- Sig Sauer P220 Legion 10mm pistol
- Three 8-round steel magazines
- Owner's manual
Frequently Asked Questions
Is this P220 Legion 10mm DA/SA or single action only?
This model (220R5-10-LEGION-R2) is the DA/SA version with a P-SAIT trigger and a frame-mounted decocker instead of a manual safety. SIG makes a separate SAO variant with an ambidextrous thumb safety under a different part number. If you prefer the traditional SIG double-action first shot, this is the one you want.
Can I mount a red dot on the Sig P220 Legion 10mm?
Yes, this is the optic-ready R2 version, so the slide comes cut from the factory to accept a pistol red dot like the SIG ROMEO series. The X-RAY3 day/night sights are still installed, so you can run irons until you decide on an optic. No gunsmith work needed to add a dot down the road.
How does 10mm recoil feel in the P220 Legion?
Much softer than you might expect. At 44 ounces, this all-metal full-size gun soaks up a lot of the snap that 10mm is known for, so full-power loads stay very manageable. The G10 grips and aggressive checkering also keep the gun planted through recoil, making fast follow-up shots realistic.
What is the P220 Legion 10mm best suited for?
It shines as a woods and backcountry sidearm, a hog and predator defense gun, and a range pistol for anyone who enjoys shooting a proper big-bore. The 5 inch barrel wrings good velocity out of 10mm, and the night sights and optic cut make it flexible enough for home defense duty too. It ships with three 8-round steel magazines, so you are set from day one.





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