This SIG Sauer MCX Rattler is a used, modern-production semi-automatic pistol in 5.56 NATO with a 7-inch barrel. It wears a matte black finish, an M-LOK handguard, a Picatinny rail on top for an optic, and a Strike Industries angled foregrip already fitted. The supplier rates the bore as excellent and the overall condition as excellent, and the serial number is 63J013881.

A short 5.56 pistol like this is a range and home-defense gun for a South Carolina shooter who wants rifle-cartridge performance in a compact package. The handguard gives you M-LOK slots for a light, and the top rail is ready for a red dot without any gunsmith work. As with any handgun bought at a dealer here, you must be 21, and a current South Carolina concealed weapons permit is accepted by many dealers in place of the NICS check.

Key features

• 5.56 NATO semi-automatic pistol, 7-inch barrel
• M-LOK handguard with Picatinny optic rail
• Strike Industries angled foregrip fitted
• Matte black finish
• Used, excellent bore and overall condition

It ships to your chosen South Carolina FFL dealer, where you complete Form 4473 and pick it up after the check clears.