Double Bell M416 Keymod AEG (Short - Black - 819) with Pre-Installed Wolverine INFERNO Gen 2 Engine, Spartan Board & FCU Battery

Upgrading a 416-style platform into a top-tier HPA system often presents alignment challenges, nozzle fitting requirements, and tedious internal wiring. The Double Bell M416 Keymod Short Black HPA Rifle (819) removes all technical friction, coming fully assembled and expert-tuned with the industry-leading Wolverine INFERNO Gen 2 HPA System.

Wolverine INFERNO Gen 2 Engine & Hybrid Technology

At the heart of this build lies the Wolverine INFERNO Gen 2, celebrated worldwide for its single-solenoid architecture and independent nozzle movement. By combining the pneumatic air efficiency of open-bolt mechanics with the feeding accuracy and hop-up seating precision of closed-bolt systems, the INFERNO Gen 2 ensures precise nozzle positioning before every shot. The result is exceptionally consistent shot-to-shot velocity, tight groupings, and maximum gas efficiency from every tank fill.

Compact 416 Ergonomics & Integrated Spartan Control

The Double Bell 819 platform features iconic 416 receiver profile lines paired with a compact Keymod handguard, allowing quick mounting of tactical lights, grips, and rail segments. Its short SBR footprint delivers outstanding maneuverability in tight rooms and fast-paced target transitions. Controlled via the integrated Spartan Board FCU, players can easily fine-tune dwell time, rate of fire, and burst modes directly through trigger inputs—eliminating the need for external programming boxes or complicated phone apps. Simply hook up your airline and regulator to command the field.

Key Features & Technical Benefits:

• Iconic 416 Platform Styling: Full-metal alloy receiver set in sleek matte black with signature 416 geometry.

• Pre-Installed Wolverine INFERNO Gen 2: Premium single-solenoid HPA engine offering superior air efficiency and precision nozzle seating.

• Spartan Board FCU Control: Easily adjust dwell, rate of fire, and burst modes directly through trigger inputs.

• Included FCU Battery: Comes supplied with a dedicated LiPo FCU battery to power internal solenoids out of the box.

• Instant Trigger Response: Solenoid-driven activation completely removes mechanical gear delay for instantaneous shots.

• Compact Keymod Handguard: Tailored for room clearing, attaching tactical accessories, and rapid field movement.

• Fully Adjustable Output: Easily adjust FPS and rate of fire through your external HPA regulator and FCU parameters.

Tech Installation & Usage Guidance

To set up, connect the included FCU battery to the Spartan Board wiring harness inside the buffer tube or stock compartment. Connect your high-pressure air line (standard QD fitting) to the lower grip line. Set your external regulator within the engine's recommended operating pressure range (typically 60–120 PSI) prior to firing. Always disconnect the FCU battery when storing the rifle to prevent deep battery discharge.