SIG Sauer SIG 556R 7.62×39 16” Semi-Auto Rifle AK47 Magazine Compatible
LSB#: WY250429EH104
Make: Sig Sauer Inc.
Model: SIG 556R (R556-762R-16B)
Serial Number: 28E001110
Year of Manufacture: Modern
Caliber: 7.62×39
Action Type: Semi-Automatic, Adjustable Short Stroke Gas Operated
Markings: The left side of the receiver is marked “28E001110”, “SIG556R, 7.62X39, SIG SAUER INC., EXETER, NH, USA”, and “S” and “F”. The right side of the receiver is marked “S” and “F” near the ambidextrous safety. The left side of the pistol grip is marked “SIG SAUER”. The barrel is marked “7.62X39 1/9.5”.
Barrel Length: 16”. 17” with fixed A2 flash hider.
Sights / Optics: The front sight is a filled dovetail. The top of the receiver has a picatinny rail for all your favorite sights and optics. The picatinny rail has a hidden flip up aperture rear sight that folds out of the picatinny rail.
Stock Configuration & Condition: The pistol grip, folding stock and handguard are synthetic. The pistol grip has a trap for storage. The LOP measures 13.25” from the front of the trigger to the back of the unfolded buttstock. The stock rates in about Excellent overall condition. There are no chips or cracks.
Magazine Quantity & Condition: One Tapco 7.62×39 30rd magazine in Excellent condition. Accepts standard AK47 magazines.
Type of Finish: Anodized Black
Finish Originality: Original
Bore Condition: The bore is bright and the rifling is sharp. There is no erosion in the bore. In this writer’s opinion the bore rates 10/10.
Overall Condition: This rifle retains about 99% of its metal finish. The balance of the finish shows minor wear behind the ejection port. The finish is strong and complete throughout. The screw heads are sharp and the pins are unmarred. The markings are clear. Overall, this rifle rates in about Excellent condition.
Mechanics: The action functions correctly. We did not fire this rifle. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.
Box, Paperwork & Accessories: This rifle comes with its factory box, owner’s manual, cable lock, handguard rail mounting kit, chamber flag. and Sig Gun Oil.
Our Assessment: The SIG Sauer SIG 556R is a unique and highly capable rifle that blends Western design precision with the rugged, proven power of the 7.62x39mm cartridge. Built on SIG’s 556 platform and adapted for AK-47 magazine compatibility, the 556R offers exceptional reliability, improved ergonomics, and the added benefit of widely available magazines and ammunition. Its short-stroke gas piston system provides smooth cycling and reduced fouling, making it a cleaner-running rifle than traditional direct impingement systems. The folding stock, integrated picatinny rail with hidden flip-up sight, and ambidextrous controls offer modern tactical utility in a robust package.
This example is in Excellent condition, showing minimal wear with a pristine bore and clean internals. The rifle comes with one 30-round Tapco AK magazine and is ready to accept most standard AK mags. For those seeking a modern rifle that delivers the classic performance of 7.62×39 with superior build quality and modularity, the SIG 556R is an ideal platform. Whether for range fun, defensive use, or collection appeal, this rifle stands out as a refined and reliable evolution of the AK concept. Please see our photos and good luck on your bid! – L.S.
