This used SIG Sauer SIG556 is a modern-production semiautomatic rifle in 5.56 NATO with a 16-inch barrel, serial JS016929. It runs a two-position adjustable gas piston system and wears a side-folding stock and a pop-up front sight. The package includes a SIG Sauer Tango4 1-4x24mm scope and a Sig Arms STL-100 grip-light already mounted. The bore is bright with strong rifling and the overall condition is very good.

Pennsylvania does not allow semiautomatic rifles for deer, bear or elk, so for a buyer here this is a range and training rifle, not a stand gun. That is the role the setup is built for: the 1-4x scope covers close drills and longer steel, the folding stock shortens it for the truck or the range bag, and the adjustable gas setting lets you tune the rifle to the ammunition you shoot.

Key features

• 5.56 NATO, 16-inch barrel, semiautomatic
• Two-position adjustable gas piston system
• SIG Tango4 1-4x24mm scope included
• Side-folding stock, pop-up front sight
• Sig Arms STL-100 grip-light fitted

The rifle ships to the Pennsylvania FFL dealer you select at checkout for the PICS check and transfer paperwork.