S&T UTG9/UMP-9 G3 AEG Sub-Machine Gun (STAEG313BBK)

The S&T UTG9 (UST9) G3 AEG is a modern airsoft submachine gun replica inspired by the iconic HK UMP-9 platform, delivering compact handling, advanced electronics, and excellent reliability for CQB and urban skirmish environments. Featuring S&T’s latest G3 Electronic Trigger System, this rifle offers enhanced trigger response, battery protection, and a 14mm CCW mock supressor included. Built with a high-density nylon fiber polymer receiver and reinforced metal components, the UTG9 balances durability with lightweight maneuverability. Its folding stock design allows rapid transitions in tight spaces, making it ideal for close-quarters operations and fast-paced gameplay. Advanced G3 Electronic Trigger System At the heart of the UTG9 lies the S&T G3 ETU, incorporating a magnetic sensor and integrated MOSFET. This system improves trigger sensitivity, protects internal electronics, and ensures consistent firing performance. The built-in low-voltage cut-off automatically stops operation when battery voltage drops below 6.0V, preventing damage to Li-Po batteries. Performance & Control The UTG9 delivers muzzle energy between 1.15–1.20 Joules, producing approximately 300–370 FPS depending on regional limits. A rotary adjustable hop-up allows precise tuning for optimal accuracy with various BB weights. The quick-change spring system enables fast power adjustments without fully disassembling the gearbox. Ergonomics & Tactical Features Ambidextrous fire selector and magazine release controls ensure comfort for both left- and right-handed players. The integrated 20mm Picatinny rails support optics, lights, and accessories, while the folding stock enhances portability during transport and CQB engagements. Key Specifications Model: S&T UTG9 / UST9 G3 (STAEG313BBK) Gearbox: Version with Quick Change Spring System Trigger System: S&T G3 Electronic Trigger Unit with MOSFET FPS: Approx. 300–370 FPS (0.20g BBs) Energy: 1.15 – 1.27 Joules Receiver: Nylon fiber polymer Outer Barrel & Rails: Metal Hop-Up: Adjustable rotary type Magazine: 100-round mid-cap (STMAG41M) Length: 450mm folded / 685–880mm extended with suppressor Weight: Approx. 2.63 – 2.8kg Controls: Ambidextrous fire selector & magazine release