Rossi M4 Neptune SEAL AEG – Built-in MOSFET & Programmable Trigger (Tan)
The Rossi M4 Neptune SEAL punches well above its price point with a built-in MOSFET unit and programmable trigger as standard. Where many similarly-priced M4 platforms require aftermarket electronics upgrades, the Neptune SEAL ships ready to compete — with active brake, adjustable burst settings, and trigger sensitivity control all accessible via the included programming card.
Built on a full-size M4 platform in tan, the Neptune SEAL is suited to desert and multi-terrain operations with rails and furniture that accept a full range of accessories. The MOSFET protects your trigger contacts and extends the lifespan of the AEG’s electrical system, while the programmable trigger lets you fine-tune firing response to your playstyle without opening the gearbox.
- Full-size M4 AEG platform in tan
- Built-in MOSFET with active braking
- Programmable trigger — burst fire, ROF, and sensitivity settings
- Configured via included programming card
- Full-length RIS/RAS rail system for accessories
- Adjustable stock for different body sizes and kit configurations
- Compatible with standard M4/M16 hi-cap, mid-cap, and low-cap magazines









