Sig Sauer SIG556 Rifle 5.56MM

For sale is a Sig Sauer 556 rifle chambered in 5.56 NATO / .223 Rem, in excellent condition. This Swiss-inspired design blends the rugged reliability of the SG 550 series with the familiarity of the AR platform.

Specifications & Condition

• Model: Sig 556

• Caliber: 5.56 NATO / .223 Rem

• Barrel Length: 16"

• Stock: Factory side-folding stock

• Condition: Excellent – minimal handling wear

• Accessories: None included (rifle only, no box)

Features

• Gas piston operating system for clean, reliable cycling

• Full-length rail for optics and accessories

• Folding stock for compact storage and transport

Why This Rifle

The Sig 556 offers a battle-proven gas piston system with modern modularity, making it a dependable and unique alternative to a standard AR-15. With its side-folding stock and excellent condition, this rifle is both a collector’s piece and a high-performance shooter.

Please Note:
All firearms sold by Northeast Munitions are not cleaned or test fired prior to sale. Each firearm is visually inspected for obvious issues or broken parts, but we do not guarantee detailed function testing beyond this inspection.