Double Bell TTI M4 (Custom Grip and 1-4*20 Scope - Black - 058M+) with Pre-Installed Storm HP-R HPA System

Skip the headaches of custom gearbox builds and alignment tuning with the Double Bell TTI M4 (Custom Grip and 1-4*20 Scope - Black - 058M+) with Pre-Installed Storm HP-R HPA System. Inspired by the high-performance Taran Tactical Innovations TR-1 platform made famous in modern action cinema, this full-metal carbine arrives pre-converted with an advanced high-pressure air drivetrain, giving you turn-key high-end performance straight out of the box.

Storm HP-R HPA Powerplant & Instant Trigger Reset At the heart of the 058M+ lies the Storm HP-R HPA system, completely replacing fragile mechanical gears, pistons, and carbon motor brushes. The pneumatic engine delivers microsecond-level solenoid actuation, producing an instantaneous trigger response that mechanical AEGs simply cannot match. With closed-loop pneumatic delivery, every shot leaves the muzzle with single-digit FPS variance, providing the ultra-consistent shot-to-shot velocity required for pinpoint groupings downrange.

Turn-Key Marksmanship Optics & Competition Ergonomics The package includes an illuminated 1-4x20 variable short-dot optic on a dual-ring cantilever mount. This enables instant magnification transitions between 1x for wide field-of-view close-quarters room clearance and 4x for mid-to-long-range designated marksman engagements. The receiver is paired with an extended modular M-LOK handguard, a multi-position adjustable crane stock, and a custom high-traction stippled pistol grip that houses the integrated grip-line air routing cleanly without pinching.

Practical Applications & Real-World Use Cases

• Woodland Marksman & Precision Carbine Roles: Running at ~80–110 PSI on heavier BB weights (0.30g–0.36g), the 4x magnification and closed-bolt nozzle consistency allow you to pick off opposing riflemen at distances traditional AEGs struggle to reach.

• Rapid CQB Room Clearing: Dial the short-dot optic down to 1x true magnification, drop your operating regulator to strict indoor limits (e.g. 300–328 FPS), and leverage the instant solenoid trigger break to out-snap opponents around tight corners.

• All-Weather Skirmish Reliability: Traditional electric AEGs suffer from battery voltage sag and gear motor strain in damp, freezing British weather. The pneumatic Storm HP-R engine operates completely unaffected by freezing temperatures, ensuring 100% cycling reliability on frosty morning skirmishes.

Specifications & Setup Features an adjustable rotary hop-up unit, 14mm CCW threaded outer barrel, and a standard QD grip-line fitting. Simply connect your HPA line and external rig (operating range typically 60–120 PSI) and you are ready to play.