Stribog SP9A3, 9mm, 8" Barrel, Flip‑up Steel Sights, PDW Brace Tailhook,Black, 3 30rd mags MSRP. Product # 775661. Manufacturer # SP9A3-PDW. UPC 850003223124 Technical Specifications. Caliber/Gauge 9MM Barrel Length 8.000" Finish Black Action Type Semi. Description. The NEW Grand Power Stribog SP9A3 9mm comes with a non-reciprocating charging handle, and a new roller delayed blowback system, and three new steel reinforced 30rd magazines. The Stribog SP9A3 offers the reliability and robustness of previous versions that enthusiasts, reviewers, and firearm dealers have come to love..