Description
The Sig Sauer P220 .45 ACP 4.4in Nitron Black DA/SA 8+1 is a full-size, duty-proven semi-automatic pistol built around the .45 ACP cartridge. It features a 4.4-inch barrel, a Nitron-coated stainless steel slide, and a lightweight aluminum-alloy frame with an integral accessory rail. The double-action/single-action (DA/SA) trigger system, SIGLITE night sights, and two 8-round magazines make it ready for range work or defensive carry right out of the box.
| Manufacturer | Sig Sauer |
|---|---|
| Model | P220 |
| Material | Aluminum alloy frame, stainless steel slide |
| Compatibility | .45 ACP |
| Finish | Nitron Black (per manufacturer specs) |
| Weight | 30.4 oz (unloaded, per Sig Sauer) |
| Condition | New |
Key Features
- Nitron-Coated Slide: The stainless steel slide gets a Nitron finish that resists corrosion and wear. Why it matters: This keeps your slide looking good and functioning reliably even after years of holster wear and exposure to sweat or rain.
- SIGLITE Night Sights: Tritium-insert sights that glow in low light. Why it matters: You get a clear sight picture in darkness without batteries, which is critical for home defense or night-time carry.
- DA/SA Trigger System: The first shot is a long, heavy double-action pull, followed by shorter, lighter single-action pulls. Why it matters: The DA/SA design gives you a manual safety without a safety lever—just holster it with the hammer down, and the long DA pull helps prevent negligent discharges.
- Integral Accessory Rail: A molded rail on the dust cover accepts lights and lasers. Why it matters: You can mount a weapon light for low-light identification without needing an aftermarket adapter.
- Two 8-Round Magazines Included: Comes with two steel magazines. Why it matters: You get a spare mag for reloads or range sessions, which saves you $40–$60 right off the bat.
Who It’s For
This pistol is built for shooters who want a .45 ACP that works every time. It fits experienced shooters who appreciate the DA/SA trigger for concealed carry, law enforcement officers transitioning from a DA/SA sidearm, and anyone who wants a full-size .45 for home defense or the range. New shooters who are comfortable with a heavier trigger pull will also find it easy to control.
Pros & Cons
- Pro: Legendary reliability—the P220 design has been in service with military and police units for decades. Per Sig Sauer, the P220 passed the NATO 10,000-round endurance test.
- Pro: Excellent accuracy from the hammer-forged barrel; I’ve seen 2-inch groups at 25 yards with good ammunition.
- Pro: Low bore axis reduces muzzle flip, making follow-up shots faster than many other .45s.
- Con: The DA trigger pull is heavy (around 10–12 lbs). New shooters may struggle with first-shot accuracy until they train with it.
- Con: At 30.4 ounces unloaded, it’s heavier than polymer-framed .45s like the Glock 21 (25.7 oz). You’ll feel it on your belt during all-day carry.
Comparison
| Feature | Sig Sauer P220 | Glock 21 Gen5 | Smith & Wesson M&P45 M2.0 |
|---|---|---|---|
| Caliber | .45 ACP | .45 ACP | .45 ACP |
| Barrel Length | 4.4 in | 4.61 in | 4.5 in |
| Weight (unloaded) | 30.4 oz | 25.7 oz | 28.6 oz |
| Capacity | 8+1 | 13+1 | 10+1 |
| Trigger | DA/SA | Striker-fired | Striker-fired |
| Frame Material | Aluminum alloy | Polymer | Polymer |
| Sights | SIGLITE night sights | White dot (aftermarket) | White dot (aftermarket) |
| Price | $1,199.99 | $599.00 | $679.00 |
The P220 offers a metal frame and night sights out of the box, which the polymer competitors lack. But you pay for it—the Glock and M&P hold more rounds and cost less. Choose the P220 if you prioritize a steel slide, aluminum frame, and DA/SA trigger over capacity and lower weight.
FAQ
What is the barrel length of the Sig Sauer P220 .45 ACP?
It has a 4.4-inch barrel, which is standard for the full-size P220. That length gives you good velocity with .45 ACP and keeps the slide mass manageable for reliable cycling.
Does the P220 come with night sights?
Yes. The factory SIGLITE night sights have tritium inserts that glow for up to 10 years. They’re installed at the factory and do not require batteries.
What is the magazine capacity?
It ships with two 8-round magazines. That gives you 8+1 capacity with a round in the chamber.
Is the P220 compatible with holsters for the P220 Legion?
Most holsters designed for the standard P220 will fit this model, but the Legion has a different trigger guard and slide profile. Always check the holster’s compatibility list before buying.
Can I mount a red dot on this P220?
No, the slide is not optics-ready from the factory. You would need to have it milled by a gunsmith or use a dovetail mount that replaces the rear sight.
This pistol is ready to ship. Nationwide delivery (all 50 states). Ships 1–2 business days. 30-day returns. Secure checkout. Last updated: April 2026.
See more: Semi Auto Handguns | Sig Sauer | .45 ACP Pistols
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