Wolverine Airsoft QUAKE MTW and INFERNO XTS HPA Recoil Upgrade Kit

The Wolverine QUAKE MTW + INFERNO XTS Recoil Upgrade Kit is the single most transformative upgrade available for an existing MTW platform. In a single installation, you get both the INFERNO XTS engine (improved consistency, tighter groupings) and the QUAKE actuated stock (HPA-driven mechanical recoil on every shot) — the same combination that ships factory-fitted on the MTW Forged Tactical XBR.

If you already own an MTW with an INFERNO Gen2 and want to know what the XBR feels like without buying a new rifle, this is exactly the upgrade kit you need.

What each component adds

• INFERNO XTS engine — extended stroke design improves the air seal between nozzle and hop rubber. Results: tighter groupings, better feeding consistency, improved air efficiency. One-piece Delrin baffle reduces friction and a common servicing error. QUAKE-ready recoil out port built in
• QUAKE MTW actuated stock — patent-pending HPA-driven recoil. Each shot sends a mechanical impulse through the stock via a dedicated recoil port on the XTS engine. Up to 35 lbs of recoil force. Adds just 76g to your rifle. No extra electronics, no wiring — powered entirely by the HPA system

What’s the QUAKE recoil like?

The QUAKE produces a distinct, consistent mechanical impulse on every shot — not the same sensation as a gas blowback system, but a genuine physical thump that experienced HPA players describe as the closest feeling to live fire recoil available from an airsoft platform. The force is tunable via the included flow reducers: fit one or both to reduce the impulse intensity if you prefer a lighter feel.

Key features

• INFERNO XTS engine — extended stroke, improved hop-up air seal, one-piece Delrin baffle
• QUAKE MTW stock — up to 35 lbs of HPA-driven mechanical recoil force
• 76g total weight added — minimal handling impact
• Tunable recoil — flow reducers included to adjust impulse intensity
• No extra electronics — entirely HPA-powered
• Compatible: MTW M4, MTW-9, MTW-308 (308 requires adapter)
• Reuses Gen2 solenoid — cost-effective upgrade path for existing MTW owners

Frequently asked questions

Q: Can I install this myself?

The installation requires access to the MTW gearbox area and some familiarity with HPA engine removal and fitting. Wolverine provides installation guidance. If you’re not comfortable doing it yourself, contact us about our tech fitting service — we can install it for you at our workshop at Wycombe Skirmish.

Q: Do I need to buy a new solenoid?

No — this kit specifically reuses the solenoid from your existing Gen2 MTW setup. That’s the key advantage over buying a full XTS engine: it’s a cost-effective upgrade that gets you the XTS improvements without replacing everything.

Q: What does the QUAKE feel like in practice?

On every shot, the QUAKE cycles a mechanical impulse through the stock. Most players describe it as a firm, consistent thump — distinctly more physical than a standard HPA setup without recoil. The flow reducers let you tune the intensity: no reducer = maximum force, both reducers fitted = gentler feedback. Most players start at full force and adjust to taste.

Q: Will this work with my MTW-308?

Yes, but you’ll need the MTW-308 QUAKE adapter (sold separately). The kit is directly compatible with MTW M4 and MTW-9 builds without additional adapters.

Q: Is the BLINC FCU still compatible after fitting this kit?

Yes — the INFERNO XTS is fully compatible with the BLINC Bluetooth FCU and BLINC + Bifrost BT. Adding BLINC after fitting this kit is a straightforward additional upgrade.