Description
Sig Sauer MCX Virtus ProForce HPA Wolverine Gen 2
The Sig Sauer MCX Virtus ProForce HPA is an officially licensed airsoft replica of Sig Sauer’s modular MCX Virtus, fitted with a Wolverine Gen 2 HPA engine. ProForce is Sig Sauer’s own airsoft line, and this build adds the crisp trigger and consistency of compressed air to one of the most recognisable modern rifles.
Our listing for the electric ProForce MCX Virtus describes a replica produced for ProForce by VFC, with correct trademarks and proportions. This ready-built HPA version saves you the work of converting one yourself.
The MCX Virtus platform
The electric ProForce MCX Virtus is described in our listing with full metal upper and lower receivers, a CNC-machined aluminium M-LOK handguard, a continuous top rail and a three-position telescoping stock. The HPA build is based on the same rifle, but please check the product images for the finish and details of this version.
The MCX layout feels familiar to anyone who has used an M4, with the selector, magazine release and trigger where you would expect them. The slim handguard and compact stock keep it well balanced and easy to move through doorways and woodland.
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 MCX Virtus is a versatile primary for CQB and woodland alike. The HPA engine’s crisp trigger suits fast snap shots, and its consistency makes it easy to learn exactly where your BBs will go.
Key features
- Officially licensed Sig Sauer ProForce MCX Virtus
- Full metal receivers (electric version, per our listing)
- M-LOK handguard (electric version, per our listing)
- Wolverine Gen 2 HPA engine (as named)
- Crisp, immediate trigger response
- Consistent, regulator-set power
- Familiar M4-style controls
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 MCX-style 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 players who want a licensed Sig Sauer MCX Virtus with the consistency and crisp trigger of an HPA engine, and for MCX fans after a high-performance build.
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.









