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The P220 has been in continuous production since 1975, and it earned SIG their reputation long before the polymer-framed era changed everything. The Legion series takes that foundation and layers on a package of factory-level upgrades that would cost real money to replicate on a standard pistol. The result is a full-size .45 ACP that's genuinely better in every meaningful way without feeling gimmicky about it.
The trigger is the headline. SIG's Short-Reset Trigger system is paired with a Grayguns Inc. P-SAIT trigger bow, which brings an adjustable over-travel setup to what is already a polished DA/SA action. The double-action pull is smooth and consistent, and the single-action break sits right around 4.5 lbs. The reset is so short it almost catches you off guard the first time you shoot it fast. Combined with the solid steel guide rod that keeps the muzzle planted during recoil, this gun rewards anyone who puts time into learning it.
SIG reworked the grip geometry on this one from the ground up. The contoured Elite beavertail lets you ride the gun higher for a more direct push-back recoil path, while the X-Five trigger guard undercut and aggressive front strap checkering give you a secure purchase without wearing your hand raw. The black G10 grip panels with the Legion medallion look sharp and provide real texture in wet conditions. Low-profile decocker and slide-catch levers keep things snag-free, and front cocking serrations give you a positive grip surface for press checks or chamber manipulation.
The slide ships with SIG XRAY3 day/night sights featuring a tritium front sight ringed in a bright green circle and a blacked-out rear notch, one of the better iron sight setups on the market for quick target acquisition in low light. The optic-ready slide is cut to the SIG Romeo2/Romeo1 Pro footprint, which is the same DeltaPoint Pro-compatible pattern, giving you a solid range of direct-mount red dot options without needing an adapter plate. The barrel carries a Black DLC coating for durability and wear resistance.
Cover it all in Legion Gray Cerakote on both the aluminum alloy frame and the stainless steel slide, add SIG's fully transferable Infinite Guarantee, and you have a pistol that comes out of the box ready to compete with guns that cost considerably more after aftermarket work.
The P220 Legion runs SIG's Short-Reset Trigger (SRT) system combined with a Grayguns Inc. P-SAIT trigger bow, which adds adjustable over-travel to an already polished factory action. The result is one of the shortest, most consistent resets you'll find on a DA/SA pistol at any price point. It's the kind of trigger work that typically costs you a trip to a pistolsmith.
The R2 slide is cut to the SIG Romeo2 footprint, which shares the same pattern as the Romeo1 Pro and is compatible with the Leupold DeltaPoint Pro, SIG Romeo-X Pro, and other optics built on the DPP footprint. Direct-mount options that fit without an adapter plate include the SIG Romeo2, Romeo1 Pro, Romeo-X Pro, Leupold DeltaPoint Pro, and the EOTech EFLX. For RMR-style optics, a filler/adapter plate is recommended for proper fitment and recoil resistance.
It transitions naturally for most 1911 shooters. The single-stack .45 ACP format keeps the grip slim at 1.3 inches wide, which will feel familiar, and the DA/SA system with a decocker gives you a carry-ready gun without a manual thumb safety to manage. The ergonomic improvements on the Legion, including the high-grip beavertail and undercut trigger guard, make the manual of arms feel even closer to what 1911 shooters are used to.
No, the pistol ships with an optic-ready slide cut but no red dot installed. It comes standard with SIG XRAY3 day/night iron sights, which are excellent on their own. The slide cut accepts the Romeo2/DeltaPoint Pro footprint, so adding a compatible optic is a straightforward bolt-on without gunsmithing.
The P220 platform manages .45 recoil well for a full-size alloy-frame pistol, largely because the solid steel guide rod adds front-end weight that keeps the muzzle from jumping sharply. The high grip enabled by the Elite beavertail and undercut trigger guard puts your hand in a better position to absorb and control that recoil impulse. Rapid follow-up shots are very manageable once you're comfortable with the trigger.
SIG SAUER backs the P220 Legion with their Infinite Guarantee, which is a fully transferable lifetime warranty with no receipts or warranty cards required. It covers the original owner as well as any subsequent owners, which is a strong value proposition for a gun at this price point.
| UPC | 798681673681 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 220RM-45-LEGION-R2 |
| Action | |
| Barrel Finish | Black DLC |
| Barrel Length | 4.4" |
| Caliber/Gauge | .45 ACP |
| Capacity | 8 + 1 |
| Mount Type | Sig Romeo2 Footprint |
| Number of Magazines | 3 8 rd. |
| Product Type | Semi-Auto Pistol |
| Shipping Weight | 0.0 |
| Sights | SIG X-Ray3 |
| Sights Type | Night Sights |
| Slide Description | Optic Ready/Serrated |
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