Cybergun FN Herstal P90 PDW GBB SMG – 350 FPS Bullpup, Green Gas

The FN P90 airsoft GBB from Cybergun finally gives UK skirmishers a fully licensed gas blowback version of FN Herstal’s instantly recognisable bullpup PDW. Built under licence by Armorer Works, the Cybergun FN Herstal P90 PDW GBB uses green gas to drive realistic blowback in a 1:1 scale 51.5 cm package — a true sub-machine gun that runs ~350 FPS with 0.20 g BBs, full-auto, in semi or with the iconic two-stage trigger pull.

Key Features

• Officially licensed FN Herstal P90® – every trade-mark and roll-mark is correct, supporting the original P90 silhouette UK milsim and PMC players actually want to run.
• Green gas blowback bullpup – aggressive recoil from a real-style P90 bolt cycle, no AEG drone, ideal for immersion-led milsim weekends.
• ~350 FPS / approximately 1.05 J with 0.20 g BBs – sits within typical UK outdoor site limits (350 FPS / 1.13 J on most outdoor sites), with the option to dial down via gas selection or BB weight for indoor games.
• 50-round low-cap gas magazine – realistic reload cadence, compatible with WE / Armorer Works P90 GBB magazines so spares are easy to source in the UK.
• Ambidextrous controls – charging handle, fire selector and magazine release all mirrored, so left-handed players and right-of-cover shooting are both viable.
• 20 mm Picatinny railed receiver + side rails – mount red dots, lasers and lights without aftermarket adapters.
• 14 mm CCW threaded outer barrel – directly accepts standard airsoft tracer units and mock suppressors.
• Rotary hop-up inside the magwell – fast tool-free adjustment with the magazine removed, no field-strip required.

Real-World Use Cases

UK CQB primary – the bullpup layout keeps the muzzle inboard during room clearing, and the compact 51.5 cm length is well inside the limits at indoor sites that ban full-length rifles. Run lighter green gas in cold UK weather to keep velocities under sub-330 FPS CQB caps.

Woodland & milsim primary – at ~350 FPS with 0.25 g BBs the P90 reaches realistic engagement distances for UK woodland skirmishes, while the gas recoil and licensed branding shine in PMC / SOF impressions.

Collectors and licensed-brand fans – with full FN Herstal trade-marking under Cybergun’s licence, this is a display-grade replica as well as a working skirmish gun.

Technical Specifications

• Manufacturer: Cybergun (licensed) / OEM: Armorer Works
• Model: FN Herstal P90 PDW GBB
• Type: Gas Blowback (Green Gas) Sub-Machine Gun
• Platform: P90 (Bullpup configuration)
• FPS (0.20 g): Approx. 350 FPS / ~1.05 J ±10%
• Length: 51.5 cm
• Weight: Approx. 1.8 kg
• Inner Barrel: 250 mm × 6.08 mm
• Outer Barrel: 10.4″ with 14 mm CCW male thread
• Hop-Up: Rotary (accessed inside the magazine well)
• Magazine: Approx. 50 rounds, low-capacity gas
• Magazine Compatibility: WE / Armorer Works P90 GBB Magazines
• Gas: Green Gas
• Fire Modes: Safe / Semi-Auto / Full-Auto with two-stage trigger
• Rail System: 20 mm Picatinny railed receiver + 20 mm side rails
• Sights: Open iron sights
• Stock: Fixed (integrated bullpup)
• Shooter Configuration: Ambidextrous
• Skill Level: Advanced player
• Calibre: 6 mm BB
• Recommended BB Weight: 0.25 g

What’s in the Box

• Cybergun FN Herstal P90 PDW GBB (1×)
• 50-round green-gas magazine (1×)
• Speed loader
• Manual & accessories

Compatibility & Upgrades

The P90 GBB accepts WE / Armorer Works P90 GBB magazines — keep at least two spares for milsim. Run premium green gas for consistent UK summer performance; in winter drop to a lighter gas or pre-warm magazines. Recommended 0.25 g – 0.30 g 6 mm BBs. The 14 mm CCW thread accepts standard airsoft mock suppressors and tracer units (e.g. ACETECH, XCORTECH). Use the 20 mm rails to add a red dot, micro-T1 optic or weapon light without modification.

UK Legal & Site Notes

Sales restricted to over-18s only. As an FN Herstal licensed RIF, this product requires UKARA registration or an applicable VCRA defence under UK law. Two-tone availability and stocked-defence options should be confirmed before purchase. Always check your skirmish site’s chronograph limit before fielding — most outdoor UK sites cap full-auto at 1.13 J / 350 FPS with 0.20 g BBs, and many CQB venues require sub-330 FPS / 1.0 J.

In stock for fast UK delivery from Airsoftdirect. Pair with our P90 GBB magazines, green gas, and 0.25 g – 0.30 g BBs for a complete loadout, or browse more licensed gas blowback SMGs for your collection.