Tool-less Hop-Up
Easily adjustable hop-up.KWA’s adjustable hop-up lets you fine-tune backspin for accuracy with any BB weight.
Lithgow Arms Licensed F90
$480.00
Gas Blowback Rifle|6mm
- Comes with one 30 round F90 magazine
- KWA Rewards: earn 480 points ($9.60 store credit). How it works
- Pay over time: 4 interest-free payments of $120.00 with Klarna, or Affirm. Details
- Free shipping on orders over $200 (contiguous US).
Klarna and Affirm are subject to approval. See payment terms. A higher initial payment may be required for some consumers. CA resident loans made or arranged pursuant to a California Financing Law license.
*This product comes with an orange mock suppressor out of the box – black tip in the image sold separately.
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KWA · Professional Training · Gas Blowback Bullpup · 6mm
Lithgow Arms Licensed F90 Gas Rifle
A licensed gas blowback bullpup
The KWA F90 is a 6mm gas blowback airsoft bullpup rifle, officially licensed from Lithgow Arms. It fires semi and full auto from one two-stage trigger at 380–400 FPS, takes a 30-round F90 magazine, and has an extended top Picatinny rail, a folding non-reciprocating charging handle, one-pin takedown and a tool-less hop-up.
30 rdsF90 magazine
380–400FPS
BullpupLayout
2-stageALO trigger
7.78 lbWeight
11+Rounds per second
Looking for one today?
The F90 is out of stock right now. These KWA gas rifles are the closest match today. Check each one’s FPS against your field’s limit.
KWA Rewards
Earn 480 points on this item, worth $9.60 in store credit. New members get 100 points for signing up and 500 bonus points on their first order.
How KWA Rewards worksPay over time
Split it into 4 interest-free payments of $120.00 with Klarna, or pay over time with Affirm. Choose either at checkout.
See payment optionsFree shipping
This item ships free, since orders over $200 ship free in the contiguous US.
Shipping detailsKlarna and Affirm are subject to approval. See payment terms. A higher initial payment may be required for some consumers. CA resident loans made or arranged pursuant to a California Financing Law license.
What is the F90?
The F90 is a gas blowback bullpup, officially licensed from Lithgow Arms. Compared with the bullpup design it builds on, it has a shorter length of pull, an extended top Picatinny rail, extra Picatinny space at the 3 to 6 o’clock positions and a folding, non-reciprocating charging handle.
It also has a modular stock/receiver-to-barrel interface with one-pin takedown, an expansion slot in the trigger housing, a waffle-pattern magazine, an ambidextrous magazine release, a mock adjustable gas block and an ambidextrous, adjustable ejection port. Inside, it shares components with KWA’s GBB line, with an improved hop-up and bolt carrier.
- Officially licensed from Lithgow Arms
- Two-stage trigger: half pull for semi, full squeeze for full auto
- ALO pull tab locks out full auto
- Tool-less hop-up
- Extended top Picatinny rail, plus rail space at 3 to 6 o’clock
- Integrated sling swivel attachment points
- One-pin takedown, ambidextrous magazine release
- Folding, non-reciprocating charging handle
F90 Features
F90 ALO Trigger
The trigger is the fire selector.Half a pull fires one round, and a full squeeze fires full auto. The ALO (automatic lockout) pull tab at the bottom of the trigger stops it from travelling all the way to full auto.
Low Power Bolt (LPB)
Optional low FPS upgrade.For players who need lower velocity for indoor fields, the KWA Low Power Bolt brings the F90 to 330–350 FPS with the same reliable performance. The F90 In Door comes with it.
Integrated Sling Swivel Points
Built in.Sling attachment points are built into the design for quick, secure sling setup.
Picatinny Rail for Accessories
Mount it your way.A Picatinny rail at the 3 o’clock position is ready for a light, laser or other accessory.
F90 Specifications
| Performance | |
|---|---|
| Power system | Gas blowback |
| Velocity | 380–400 FPS |
| Rate of fire | 11+ rounds per second |
| Firing modes | Semi and full auto, set by the two-stage ALO trigger |
| Magazine | F90, 30 rounds |
| Hop-up | Tool-less, updated gas hop-up |
| Bolt | Standard (LPB available as an upgrade) |
| Dimensions | |
| Length | 31.5 in, fixed stock |
| Height | 7.3 in |
| Outer barrel | 19 in |
| Inner barrel | 11.5 in |
| Weight | 7.78 lb |
| Build | |
| Platform | Bullpup rifle |
| Stock | Fixed |
| Rails | Extended top Picatinny, Picatinny at 3 o’clock |
| Charging handle | Folding, non-reciprocating |
| Controls | Ambidextrous magazine release, adjustable ejection port |
| Muzzle | Standard (orange mock suppressor installed) |
| License | Lithgow Arms |
| Collection | Professional Training |
Which magazines fit? See the KWA magazine compatibility chart.
What comes with the F90
In the box
- Lithgow Arms Licensed F90 gas blowback rifle
- One F90 30-round magazine
- Orange mock suppressor, installed
You will also need
- Gas for the magazine. KWA sells green gas
- 6mm airsoft BBs
- Silicone oil for magazine seals
- Full-seal eye protection
Popular add-ons
How the F90 works
Gas blowback rifles reward a little know-how. Here is what to expect.
Gas blowback, explained
Green gas is stored in the magazine. Each trigger pull releases gas that fires the BB and drives the bolt back, which gives you bolt movement and recoil you can feel.
Because the gas lives in the magazine, healthy magazines mean a healthy rifle. Keep their seals oiled and fill them correctly.
The two-stage ALO trigger
The F90 has no separate selector switch. The trigger does the job: half a pull fires one round in semi-auto, and a full squeeze fires full auto.
The ALO (automatic lockout) is a pull tab at the bottom of the trigger. Engage it and the trigger cannot travel far enough for full auto.
Standard or In Door?
Both versions are the same rifle. The standard F90 shoots 380–400 FPS. The F90 In Door comes with KWA’s Low Power Bolt (LPB) for 330–350 FPS, to meet indoor field limits. Fields set velocity limits, often lower indoors than outdoors, so check yours and confirm at chrono.
Filling a gas magazine
Each shot uses some of the gas in the magazine to fire the BB and cycle the bolt.
- Hold the magazine upside down and the green gas can upside down and vertical.
- Press the can straight down onto the magazine fill valve until it stops taking gas.
- Load BBs, insert the magazine and you are ready.
- Gas cools as you shoot. Let magazines warm up between strings and keep them out of direct sunlight.
Hop-up, explained
Hop-up puts backspin on the BB so it lifts and flies flatter and farther. Too little and BBs drop early. Too much and they climb.
- Start with the hop-up at its lowest setting.
- Fire a few shots at a target at your usual distance.
- Add a little hop at a time until BBs fly flat before they drop.
- Back it off if BBs start to rise. Re-check whenever you change BB weight.
F90 vs F90 In Door
The same Lithgow Arms licensed gas bullpup. The In Door version comes with the Low Power Bolt for lower velocity.
| F90 | F90 In Door | |
|---|---|---|
| Velocity | 380–400 FPS | 330–350 FPS |
| Bolt | Standard | Low Power Bolt (LPB) |
| Best for | Fields that allow 380–400 FPS | Indoor fields, and outdoor play too |
| Magazine | F90, 30 rounds | F90, 30 rounds |
| Trigger | Two-stage with ALO | Two-stage with ALO |
| Rate of fire | 11+ rounds per second | 11+ rounds per second |
| Length | 31.5 in | 31.5 in |
| Weight | 7.78 lb | 7.78 lb |
F90 care and parts
- Put a drop of silicone oil on the magazine seals now and then to keep them sealing well.
- Store gas magazines in a cool, dry place and never in direct sunlight or a hot car.
- Check feed lips and seals before each game, and do not drop magazines on hard surfaces.
- Wipe the gun down after each game and keep the inner barrel and hop-up bucking clean.
- Use silicone oil only. Avoid petroleum lubricants on seals and rubber parts.
Manuals and diagrams are in the Manuals & Diagrams library.
F90 FAQ
What is the KWA F90?
A 6mm gas blowback airsoft bullpup rifle from KWA, officially licensed from Lithgow Arms, with a two-stage ALO trigger, a tool-less hop-up and Picatinny rails.
How many FPS does the F90 shoot?
KWA lists it at 380–400 FPS. Fields set velocity limits, often lower indoors than outdoors, so check yours and confirm at chrono.
How do I switch between semi and full auto?
With the trigger. Half a pull fires one round, and a full squeeze fires full auto. Engage the ALO pull tab at the bottom of the trigger to lock out full auto.
How many rounds does the F90 magazine hold?
30 rounds. One F90 30-round magazine is included.
Can the F90 shoot lower FPS for indoor fields?
Yes. KWA’s Low Power Bolt (LPB) is an upgrade that brings it to 330–350 FPS. The F90 In Door comes with it.
What is the difference between the F90 and the F90 In Door?
Only the bolt. The F90 shoots 380–400 FPS. The F90 In Door has the Low Power Bolt for 330–350 FPS.
Does it come with an orange tip?
Yes. It ships with an orange mock suppressor. The black tip shown in some photos is sold separately.
Can I pay for the Lithgow Arms Licensed F90 over time?
Yes. Choose Klarna at checkout to split it into 4 interest-free payments, or Affirm to pay over time. Both are subject to approval. See Payment Options.
Do I earn KWA Rewards points on the Lithgow Arms Licensed F90?
Yes. KWA Rewards members earn 1 point for every $1 on orders of $50 or more, so the Lithgow Arms Licensed F90 earns about 480 points, worth $9.60 in store credit (50 points = $1). See KWA Rewards.
Is the F90 covered by a warranty?
Every KWA gun is backed by KWA, with warranty support and in-house service in California. Protection Plus adds extended warranty coverage and a repair plan with no repair fee, discounted parts and free return shipping. See the Protection Plus page for plan details.
KWA Airsoft
Built to Run, Backed by KWA
KWA warrantyEvery KWA gun is backed by KWA.
Protection PlusExtended warranty coverage plus a repair plan with no repair fee.
In-house serviceRepairs and support from KWA in California.
Parts and manualsOrder parts by part number and download diagrams.
| Weight | 10 lbs |
|---|---|
| Dimensions | 42 × 6 × 1 in |
Specifications
- Length (Retracted): 31.5“
- Length (Extended): 31.5“
- Height: 7.3“
- Outer Barrel Length: 19“
- Inner Barrel Length: 11.5“
- Magazine Capacity: 30
- Weight: 7.78
- Gearbox: NA
- Electronic Trigger Ready: NA
- Rate of Fire: 11+
- Velocity: 380-400
- Power Source: GAS
- Operation: GAS
- Adjustable Hop Up: updated Gas Hop Up
- FPS Range: 380-400
- Firing Modes: Semi/Auto
- Motor Type: NA
- Stock: Fixed Stock
- Rail Type: NA
- Muzzle Device: Standard
- Compatible Magazines & Additional Features: F90 30rd Magazine
KWA Resources
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