Double Bell 416-A5 AEG (Black - 813) with Pre-Installed Wolverine INFERNO Gen 2 Engine, Spartan Board & FCU Battery

Converting a specialized 416-A5 platform into a high-performance HPA system often presents alignment challenges, custom nozzle requirements, and tedious wiring modifications. The Double Bell 416-A5 Black HPA Rifle (813) removes all technical friction, coming expert-assembled and powered by 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 design and independent nozzle movement. By combining the pneumatic air efficiency of open-bolt mechanics with the feeding accuracy and hop-up seating stability 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 air efficiency out of every tank fill.

Modern 416-A5 Ergonomics & Integrated Spartan Control

The Double Bell 813 platform captures the distinct design elements of the iconic 416-A5, including a heavy-duty full-metal receiver set, integrated front quad-rail handguard, ambidextrous fire selector, and ergonomic slimline stock. 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:

• Modern 416-A5 Styling: Full-metal construction featuring signature A5 receiver geometry, quad rail handguard, and ambidextrous controls.

• 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.

• Integrated Quad Rail Handguard: Ample Picatinny rail space for optics, magnifiers, weapon lights, and vertical foregrips.

• 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.