SIG SAUER SIG556
The SIG Sauer 556 is the semi-automatic variant of the SG 550, a Swiss battle rifle chambered in 5.56 NATO. It differs from the original with its aluminum lower receiver that accepts M16 magazines. This SIG556 has a piston system and rail covers. Purchase includes six 30-round magazines. Get the best bang for your buck when you get a Certified Used Firearm. When you see the Certified Used stamp on any of our firearms, you can be confident that you're getting exactly what you want - a gun only in very good to excellent condition and held to the highest quality standard. All Certified Used Guns come with a 'no questions asked' return policy. PLUS, ALL CERTIFIED USED GUNS SHIP FREE!
