GunsAmerica

Quick Look

The SIG 550 is a Swiss-made assault rifle developed in the 1980s for military use. It emphasizes precision, durability, and user safety. Today, it remains popular among collectors and NATO forces for its reliable performance and engineering.

Why It's a Top Choice

Exceptional accuracy and long-range capability
Robust construction suited for harsh conditions
Fully adjustable sights and modular design
Proven reliability in diverse environments
Wide NATO cartridge compatibility

Key Variants

SIG 550 Commando

Compact variant ideal for close quarters and special operations.

SIG 551

Shortened barrel model preferred by units requiring enhanced maneuverability.

SIG 552

Carbine offering excellent balance between size and effective range.

SIG 553

Modernized model featuring improved ergonomics and accessory rails.

Competitor Comparison Table

Feature	Sig 550	HK 416	FN SCAR
MSRP	$3,000+	$3,200+	$3,500+
Capacity/Size	20-30 rounds, 22.5 in barrel	20-30 rounds, 16.5-20 in barrel	20-30 rounds, 16-20 in barrel
Weight	9.9 lbs	8.5-7.9 lbs	7.9-8.1 lbs
Optics-Ready	Yes, integrated mount	Yes, Picatinny rail	Yes, Picatinny rail
Trigger Type	Two-stage	Single-stage	Adjustable
Notable Pro	High precision and durable Swiss engineering	Reliability and widespread military adoption	Modularity and combat-proven versatility
Notable Con	Heavy compared to modern carbines	Higher cost and maintenance	Complexity and price point

Best Use Cases

Military and law enforcement duty
Collecting Swiss precision firearms
Long-range target shooting
Self-defense with high-caliber rounds
Range training and drills

FAQs

Can I customize the SIG 550 for optics?

Yes, the SIG 550 has an integrated optics mount accepting a variety of scopes and red dots for enhanced targeting.

What caliber does the SIG 550 use?

The SIG 550 fires the 5.56x45mm NATO cartridge, standard for many military rifles worldwide.

How does the SIG 550 compare in weight to modern carbines?

At approximately 9.9 pounds, it is heavier than many modern carbines designed to prioritize maneuverability.

SIG 550 for Sale