Sig Sauer SIG 556 5.56mm NATO Semi-Auto Rifle with Samson STAR 556 Quad-Rail Handguard and Folding Front Sight
This Sig Sauer SIG 556 is a U.S.-made, gas piston semi-auto rifle chambered in 5.56mm NATO with a 16" barrel and a 30+1 capacity. This example is configured with an aftermarket Samson Manufacturing STAR 556 railed handguard, giving it a quad-rail setup and a continuous Picatinny-style top rail spanning the upper receiver and handguard. The receiver is marked "SIG 556" and "SIG 5.56 NATO, SIG SAUER INC., EXETER, NH, USA," and the handguard is marked "SAMSON MFG. CORP., WHATELY, MA, U.S.A." and "STAR 556" with numbered rail position markings.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Specific Condition Notes: The firearm shows signs of wear and handling, including scratches, blemishes, and areas of finish loss.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
What's Included
- Soft case
- 1x 30-round magazine (Magpul PMAG Gen M2 MOE polymer, 5.56x45)
This SIG 556 features a Samson STAR 556 aluminum quad-rail handguard that is clearly marked and includes numbered rail position markings, making it easy to reference accessory placement. Up top, the Picatinny-style rail runs continuously from the upper receiver through the handguard for a consistent mounting surface.
The rifle uses a gas piston action and comes with a polymer telescoping, collapsible stock and a SIG SAUER-marked polymer pistol grip. Length of pull is listed at 12.0.
Sighting equipment includes a folding front sight. At the muzzle, a slotted flash-hider-style muzzle device is present.
Receiver markings identify it as a SIG SAUER INC. Exeter, NH production, and the observed serial number format begins with the prefix "JS."