Rossi Neptune 10.5 SAS BK HPA MechLabs Airsoft Rifle
Product Overview
The Rossi Neptune 10.5″ SAS BK HPA Edition is a premium, factory-built high-pressure air rifle developed in collaboration with MechLabs to deliver elite pneumatic performance straight out of the box. Housed inside a full-metal, UKSF-inspired L119A2 monolithic-style receiver assembly, this advanced platform replaces traditional electro-pneumatic internals with the cutting-edge MechLabs XX-Mod engine. Operating as a 100% mechanical and fully pneumatic closed-bolt system, it entirely eliminates the need for batteries, control units, or sensitive electronics, ensuring complete waterproof reliability in adverse field conditions. Designed for instantaneous trigger response and ultra-tight velocity consistency, this high-performance rifle offers commercial site operators and competitive trade buyers an exceptionally rugged, low-maintenance HPA powerhouse engineered for intense tactical deployment.
Technical Specifications & Materials
- Weapon Category: Rifle
- Weapon Powered By: HPA (External high-pressure air tank and regulator setup required)
- Weapon Powered FPS: 300–350 FPS (Regulator pressure adjustable to site requirements)
- Construction Gun: Full CNC-machined aluminium receiver, buffer tube, and 10.5″ monolithic-style handguard assembly
- Weapon Hop Up: Adjustable rotary unit with premium Maple Leaf Super Macaron rubber and Omega tensioner
- Weapon Variant/Platform: M4 / L119A2 UKSF Platform (Neptune SAS BK MechLabs XX-Mod Edition)
- Blowback: Non-Blowback (NBB) fixed-cycle mechanical HPA engine
- Weapon Fire Mode: Safe / Semi-Automatic / Full-Automatic (Mechanical selector adjustment)
| SKU | 214011 |
| Category | Rifle |
| Blowback | Non-Blowback |
| Construction Gun | Metal/Polymer |
| Fire Mode Guns | Safe/Single/Auto |
| FPS Guns | 301 - 350 |
| Powered by Gas | HPA |

