Sig Sauer SG553P .300 AAC Blackout SBR, 12 in. Threaded Barrel, FDE, Swiss Right-Folding Stock, JDI/SAN Imports
This Swiss-made Sig Sauer SG553P is a factory-imported NFA short-barreled rifle in .300 AAC Blackout with a 12 in. threaded barrel. Marked by SAN Imports (JDI Firearms Inc.) and configured with a Swiss right-folding polymer stock, it features a US-pattern lower that accepts STANAG/AR-15 magazines, a full-length 1913 top rail, and an adjustable two-position gas regulator. Finished in flat dark earth with black furniture accents, it also carries personalized text engraving.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are some light markings from previous handling and use. The bore is bright and clean. Please refer to the photos for details.
What's Included
- Hard rifle case
- 1x 30-round Magpul PMAG Gen M3 AR-15 pattern polymer magazine
This SG553P stands out as a Swiss-made, JDI/SAN Imports-marked SBR chambered in .300 AAC Blackout (7.62x35mm). It is configured with a 12 in. threaded barrel capped by an open-prong flash hider and an adjustable two-position gas regulator, pairing the caliber’s versatility with the SG553’s proven gas piston, rotating-bolt system. This is an NFA short-barreled rifle (SBR).
The rifle uses a US-pattern aluminum lower that accepts STANAG/AR-15 magazines and includes one 30-round Magpul PMAG Gen M3. Controls include a two-position safety selector marked S and 1 and a right-side charging handle for direct, positive manipulation.
Ergonomics and handling are enhanced by the Swiss right-folding, skeletonized polymer stock with a 13.5 in. length of pull. The ventilated metal handguard features elongated slots for heat dissipation and a fixed front sling loop. A flip-up front sight is mounted on the forward rail section.
A full-length 1913 top rail bridges the receiver and handguard, offering a continuous mounting surface. The upper is stamped steel, and the lower is aluminum, with a cohesive flat dark earth finish on the receiver and handguard contrasted by black furniture.
Import and personalization details include SAN Imports (JDI Firearms Inc.), Frisco, Texas markings and personalized text engraving: "MARK BURKE BALOGH LORAIN, OHIO." These marks, combined with its Swiss origin and .300 BLK SBR configuration, make this example notable to informed buyers and collectors.