Radian Model 1 (ETU) AEG Recoil
The Radian Model 1, now as a KWA AEG Recoil rifle
The Radian Model 1 (ETU) is a PTS-licensed 6mm AEG airsoft rifle with KWA’s AEG Recoil system and the KWA Electronic Trigger Unit (ETU) pre-installed. It shoots 370–400 FPS in semi, burst and full auto at 23 rounds per second, comes with one PTS EPM ERG 30/120-round magazine, and has a 14-inch M-LOK rail and a compact Enhanced Polymer Stock.
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Earn 495 points on this item, worth $9.90 in store credit. New members get 100 points for signing up and 500 bonus points on their first order.
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What is the Radian Model 1 (ETU)?
For the first time, the Radian Model 1 comes as an AEG Recoil rifle. It is built for fans of the Radian Model 1 who want KWA recoil and a programmable trigger in one package.
The KWA ETU puts control at your fingertips. Adjust trigger sensitivity or switch burst modes on the go, and the ETU detects and configures for 7.4v or 11.1v batteries automatically. Prefer gas? The Radian Model 1 also comes as a gas blowback rifle.
- KWA ETU pre-installed: precocking, burst, trigger sensitivity, equalizer
- Semi-lock function and brushless motor mode
- KWA AEG Recoil system
- Detects 7.4v and 11.1v batteries
- 14-inch M-LOK rail
- PTS Enhanced Polymer Grip and compact Enhanced Polymer Stock
- Enlarged trigger guard and switch life extender
- Rotary hop-up and one-piece upper receiver
Radian Model 1 (ETU) Features
Precocking
Pre-positions the piston for a faster first shot.
Burst Mode
Three rounds by default, and you can set the count.
Semi-Lock
Locks the rifle to semi-auto for semi-only fields.
Trigger Sensitivity
Change trigger pull length without opening the gearbox.
Equalizer
Adjusts the reset point for faster follow-up shots.
Brushless Motor Mode
Smooths start-up for brushless motors.
See the Radian Model 1 (ETU)
Radian Model 1 (ETU). A KWA video on the Radian Model 1 (ETU).
Radian Model 1 (ETU), part 2. A second KWA video on the Radian Model 1 (ETU).
Radian Model 1 (ETU) Specifications
| Performance | |
|---|---|
| Power system | AEG Recoil |
| Trigger | KWA ETU, pre-installed |
| Velocity | 370–400 FPS |
| Rate of fire | 23 rounds per second |
| Firing modes | Safe, semi-auto, burst, full auto |
| Magazine | PTS EPM ERG, 30 or 120 rounds |
| Hop-up | Adjustable (rotary) |
| Motor | KWA high torque motor |
| Battery | Li-Po or Li-ion, 7.4v or 11.1v (not included) |
| Dimensions | |
| Length | 32.5 in retracted, 35.25 in extended |
| Height | 10.5 in |
| Outer barrel | 14.25 in |
| Inner barrel | 11.75 in |
| Weight | 7.5 lb |
| Build | |
| Platform | Rifle |
| Rail | 14-inch M-LOK |
| Stock | PTS Enhanced Polymer Stock, compact |
| Grip | PTS Enhanced Polymer Grip |
| Muzzle | AR flash hider (orange mock suppressor installed) |
| Receiver | One-piece upper, enlarged trigger guard, switch life extender |
| Collection | PTS Licensed |
Which magazines fit? See the KWA magazine compatibility chart.
What comes with the Radian Model 1 (ETU)
In the box
- Radian Model 1 (ETU) AEG Recoil rifle
- One PTS EPM ERG 30/120-round magazine
- Orange mock suppressor, installed
You will also need
- An AEG battery and charger (not included). Li-Po or Li-ion, 7.4v or 11.1v. Ask KWA which size and connector fit.
- 6mm airsoft BBs
- Full-seal eye protection
Popular add-ons
- Spare M4/AR15-style AEG magazines, such as KWA MS120 mid-caps
- KWA 0.25g Bio BBs, 5,000 rounds
- KWA BB speedloader
How the Radian Model 1 (ETU) works
The KWA ETU (Electronic Trigger Unit)
The ETU is a programmable trigger unit inside the gearbox. You set it from the trigger itself, with no laptop or app.
Precocking pre-positions the piston so the first shot fires with minimal delay. Burst mode turns the AUTO position into full auto or a 2 to 5 round burst. Trigger sensitivity has high, medium and low settings, and an equalizer adjusts the reset point for quick follow-up shots.
The ETU detects 7.4V or 11.1V batteries, confirms with beeps and cuts power when the battery runs low to protect it. Full steps are in the ETU manual in the KWA Resources tab, and on the KWA ETU page.
Burst and semi-lock
With the selector on AUTO, the ETU can run burst mode: one trigger pull fires 3 rounds by default, and you can set the number of rounds per burst.
The semi-lock function limits the rifle to semi-auto for fields and events that require it.
The Kinetic Feedback System
KWA’s electronic recoil system replicates the movement of a reciprocating bolt, so you feel a kick with every shot while keeping the reliability of an AEG.
In semi-auto every shot kicks. In full auto it adds a rhythm you can feel at 23 rounds per second.
Choosing a battery
The battery and charger are not included. This rifle takes a Li-Po or Li-ion battery. The ETU detects 7.4v and 11.1v batteries.
Match the connector, check that the battery fits the stock or battery space, and charge it only with a charger made for that battery type. Ask KWA if you are not sure which size fits.
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.
Radian Model 1 (ETU) vs Ronin T10 (ETU)
Two KWA AEG recoil rifles with the KWA ETU pre-installed.
| Radian Model 1 (ETU) | Ronin T10 (ETU) | |
|---|---|---|
| Velocity | 370–400 FPS | 380–400 FPS |
| Rate of fire | 23 rounds per second | 18+ rounds per second |
| Outer barrel | 14.25 in | 11 in |
| Length | 32.5–35.25 in | 29.25–32 in |
| Weight | 7.5 lb | 6.5 lb |
| Rail | 14-inch M-LOK | 10-inch M-LOK |
| Magazine included | PTS EPM ERG, 30/120 | MS120, 120 |
| Collection | PTS Licensed | Ronin series |
Radian Model 1 (ETU) care and parts
- Disconnect the battery whenever you are not using the rifle.
- Charge with a charger made for your battery type (NiMH or Li-Po/Li-Fe).
- Keep the inner barrel and hop-up bucking clean if accuracy drops.
- Wipe the rifle down after each game and check screws and the rail before you play.
Find the ETU manual and diagrams in the KWA Resources tab on this page, or in the Manuals & Diagrams library.
Radian Model 1 (ETU) FAQ
What is the Radian Model 1 (ETU)?
A PTS-licensed 6mm AEG airsoft rifle with KWA’s AEG Recoil system, the KWA ETU pre-installed and a 14-inch M-LOK rail.
How does burst mode work?
One trigger pull fires 3 rounds by default. You can set the number of rounds per burst.
Can I change the trigger sensitivity?
Yes. Trigger sensitivity adjusts trigger pull length without opening the gearbox.
How many FPS does it shoot?
KWA lists it at 370–400 FPS.
Is a battery included?
No. Batteries and chargers are sold separately. The ETU detects 7.4v and 11.1v batteries.
Does it come with an orange tip?
Yes. It ships with an orange mock suppressor out of the box. The black version shown in some photos is sold separately.
Is there a gas version?
Yes. The Radian Model 1 Gas Blow Back Rifle is also available.
Can I pay for the Radian Model 1 (ETU) AEG Recoil Rifle 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 Radian Model 1 (ETU) AEG Recoil Rifle?
Yes. KWA Rewards members earn 1 point for every $1 on orders of $50 or more, so the Radian Model 1 (ETU) AEG Recoil Rifle earns about 495 points, worth $9.90 in store credit (50 points = $1). See KWA Rewards.
Is the Radian Model 1 (ETU) 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.
