SIG 556 for Sale
Browse SIG 556 listings from verified sellers across the U.S. on GunsAmerica.
Quick Look
The SIG 556 is a semi-automatic rifle derived from the Swiss SG 551 series introduced in the early 2000s. It emphasizes robust build quality combined with modular design for versatile use. The rifle remains popular among civilian shooters for tactical and sporting applications.
Why It's a Top Choice
- Reliable performance in diverse conditions
- Modular design with adjustable stocks and rails
- Compatible with standard AR-15 magazines
- Strong aftermarket support for accessories
- Accurate and smooth 5.56x45mm NATO chambering
Key Variants
SIG 556 Classic
Traditional model favored for its reliability and straightforward design, ideal for tactical enthusiasts.
SIG 556 R
Features a collapsible stock and improved ergonomics for better handling in tight environments.
SIG 556 DMR
Designated marksman rifle variant with enhanced barrel and optics-ready setup for precision.
Competitor Comparison Table
| Feature | Sig 556 | Ruger Mini-14 | FN SCAR 16S |
|---|---|---|---|
| MSRP | $1,300–$1,600 | $900–$1,100 | $2,000–$2,300 |
| Capacity / Size | 20–30 rounds (5.56 NATO) | 20–30 rounds (5.56 NATO) | 20 rounds (5.56 NATO) |
| Weight | 7.9 lbs average | 6.6 lbs average | 7.9 lbs average |
| Optics-Ready | Yes, integrated rail | Limited (some models) | Yes, modular rail system |
| Trigger Type | Single-stage | Double-action/single-action | Two-stage |
| Notable Pro | Swiss engineering quality | Lightweight and affordable | Highly modular and durable |
| Notable Con | Higher price point | Less modular than ARs | Expensive and heavier |
Best Use Cases
- Home defense and tactical training
- Law enforcement and security duty
- Medium-range target shooting
- Collection and enthusiasts
- Competition in practical rifle sports
FAQs
Can I use AR-15 magazines in the SIG 556?
Yes, the SIG 556 accepts standard AR-15 magazines chambered in 5.56 NATO, allowing broad magazine compatibility.
What caliber does the SIG 556 use?
The SIG 556 is chambered in 5.56x45mm NATO, a popular cartridge for accuracy and moderate recoil.
How does the SIG 556 compare to the Ruger Mini-14?
The SIG 556 offers more modern ergonomics and optics options, while the Mini-14 is lighter and more affordable.
Prefer nearby results? Toggle to search local listings.
Sig Sauer SIG SLX SURG556 556 FDE W/SHIE
$2,100.99
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From the latest advancements in firearm technology to trusted essentials, GunsAmerica offers a comprehensive selection of gun accessories designed to enhance performance, reliability, and safety. Whether you need precision optics, durable stocks, high-capacity magazines, suppressors, or muzzle devices, our marketplace provides everything required to maintain, upgrade, and customize your firearms. We feature products from leading manufacturers, ensuring superior quality and compatibility across all firearm platforms. Our extensive inventory is built to support every shooter’s needs, from tactical applications and competitive shooting to hunting and everyday carry. At GunsAmerica, we are committed to delivering a seamless, secure shopping experience with competitive pricing, making it easier than ever to find the right accessories to optimize your firearms for any mission or environment.