Description
Double Bell L119A2 Neptune SAS HPA Wolverine Gen 2
The Double Bell L119A2 Neptune SAS HPA is an airsoft replica of the L119A2 carbine associated with UK special forces, fitted with a Wolverine Gen 2 HPA engine. It is a popular choice for British milsim loadouts, and the HPA engine adds a crisp trigger and consistent, regulator-set power.
Double Bell is known for solid, good-value replicas, and its L119A2 Neptune SAS has become a popular way to build a UK special forces impression without spending heavily. This ready-built HPA version saves you the work of converting one yourself.
The L119A2 platform
The L119A2 follows the AR layout, so its controls are exactly where M4 users expect them. A UK retailer listing of the electric Double Bell L119A2 Neptune SAS describes a full metal body, top and bottom rails, flip-up iron sights and a threaded outer barrel. The HPA build replaces the electric internals, so please check the product images for the details of this version.
Its compact length and railed handguard make it easy to set up with a light, laser, grip and optic for a modern UK special forces look.
The Wolverine Gen 2 HPA engine
The listing names a Wolverine Gen 2 HPA engine. Wolverine Airsoft is one of the best-known makers of HPA engines, and its current Gen 2 engine for AEG-based rifles is the INFERNO Gen 2, a solenoid-driven design that Wolverine describes as combining the easy tuning and air efficiency of open-bolt engines with easier hop-up tuning. Please contact us if you would like us to confirm the exact Wolverine engine and electronics fitted to this rifle before ordering.
Wolverine engines are tuned through adjustable electronics rather than by changing springs, and they need a small battery to power the trigger electronics as well as an air supply.
How HPA works
An HPA (high pressure air) rifle runs on compressed air from a tank, fed through a regulator and an air line to the engine in the rifle. Instead of a motor turning gears to compress a spring, a solenoid-controlled valve releases a measured puff of air for each shot. With far fewer moving parts than an AEG gearbox there is less to wear, and the trigger response is crisp and immediate.
Because the air is regulated, shot-to-shot consistency is excellent and performance does not drop away in cold weather the way gas replicas can. Power is set at the regulator, so the rifle can be tuned to suit the limits at your site without opening it up.
On the field
The L119A2 is a versatile carbine for both CQB and woodland, and it is a centrepiece of many British milsim loadouts. With HPA there is no battery to swap and no loss of performance on cold days, so it behaves the same through a long weekend event.
Key features
- L119A2 style carbine
- Neptune SAS styling (as named)
- Full metal body (per retailer listing for the electric version)
- Top and bottom rails (per retailer listing)
- Wolverine Gen 2 HPA engine (as named)
- Crisp, immediate trigger response
- Consistent, regulator-set power
- Ideal for UK milsim impressions
Compatibility
To run the rifle you will need an HPA air supply: a tank, a regulator and an air line. The listing does not state that any of these are included, so please check with us before ordering if you need a complete setup.
As an AR-pattern HPA build on the AEG platform, it is designed around M4-type AEG magazines; most standard M4 AEG magazines should fit, but fit varies between brands, so test any new magazine before relying on it in a game. Set the regulator pressure so the rifle stays within your site’s power limits, and have it chronographed before play. Start with the hop-up off, then add hop a little at a time until the BBs fly flat, and note the regulator and hop settings that suit your favourite BB weight.
Care and maintenance
Keep the HPA system clean and dry. Check air line fittings and O-rings for leaks before each game, fill your tank only with clean, dry compressed air, and have the tank tested and serviced as its manufacturer requires.
Clean the inner barrel regularly, use good quality seamless BBs, and remove the electronics battery when the rifle is stored. Follow Wolverine’s manual for engine maintenance, and use only silicone-based lubricants on seals and O-rings.
Who is it for?
This rifle is for British milsim players and anyone building a UK special forces impression who wants the consistency and crisp trigger of an HPA engine.
Please note: An HPA tank, regulator and air line are needed to use the rifle and are not stated as included, and the box contents are not listed, so please ask us if you need to know before ordering. Always wear suitable eye protection when using any airsoft replica, and have it chronographed at your site before play.










