• Shipping across Europe
  • Own stock ordered before 12:00, shipped today
  • 60-day return policy
  • Official Airsoft Bazaar webshop
/
Specna Arms

SA M4 Keymod Gen2 (SA-F02 FLEX™ HAL ETU™) – Black

Technical Specifications Platform: M4 / AR-15 Series: FLEX™ Gen2 Length: 790-875 mm Weight: 2340 g Power Source: AEG Unit: HAL ETU™ Gearbox: Æther™ V2 QSC Quick Spring Change: Yes (ESA™) Hop-up: TDC Inner Barrel: 6.03 mm Velocity: 115 m/s Bearings: 8 mm Connector: T-Dean Body Material: Fiber-reinforced nylon Handguard: Keymod Thread: 14 mm CCW Package Contents Specna Arms M4 Keymod FLEX™ Gen2 Hi-cap magazine (300 BBs) Flip-up sights M90 spring Specna Arms stickers User manual...

Price to follow
Muzzle velocity
377 fps (1,32 J at 0.20 g)
Weight
2345 g
Battery connector
T-Dean
Magazine capacity
300 rds
Mount type
KeyMod
Inner barrel length
365 mm
Pick a variant
Cannot be ordered
In stock · delivered Thu 12 Nov – Mon 16 Nov in United Kingdom

Temporarily sold out

18+ and NABV or ACA membership required; we check this after your order.

Temporarily sold out

Leave your e-mail address and we mail you once when this product is back in stock.

We will e-mail you as soon as the product is back in stock.

Item number
SPARMS397-BK
Manufacturer number
SPE-01-048380-00
EAN
5902543215017
  • ✓ 60-day returns
  • ✓ Secure payment: PayPal, Klarna, card
  • ✓ Official Airsoft Bazaar webshop
18+:
yes
UKARA/defence (UK):
not required
NABV or ACA pass (NL):
required
F-mark (DE):
no
Price to follow
SA M4 Keymod Gen2 (SA-F02 FLEX™ HAL ETU™) – Black

You will also need

Shipping & returns

Shipped with GLS from the Netherlands.

14-day right of withdrawal and 60-day returns; start a return from your order.

Delivery time per country
Netherlands
1 working day
Belgium
1–2 working days
Luxembourg
2–3 working days
Germany
2–3 working days
Austria
3–4 working days
France
2–4 working days
Spain
3–5 working days
Portugal
4–6 working days
Italy
3–5 working days
Poland
3–5 working days
Hungary
3–5 working days
Denmark
2–4 working days
Sweden
3–5 working days
Finland
4–6 working days
Ireland
3–6 working days
United Kingdom
3–6 working days
Switzerland
3–6 working days

All about shipping All about returns

Product description

Technical Specifications

  • Platform: M4 / AR-15

  • Series: FLEX™ Gen2

  • Length: 790-875 mm

  • Weight: 2340 g

  • Power Source: AEG

  • Unit: HAL ETU™

  • Gearbox: Æther™ V2 QSC

  • Quick Spring Change: Yes (ESA™)

  • Hop-up: TDC

  • Inner Barrel: 6.03 mm

  • Velocity: 115 m/s

  • Bearings: 8 mm

  • Connector: T-Dean

  • Body Material: Fiber-reinforced nylon

  • Handguard: Keymod

  • Thread: 14 mm CCW

Package Contents

  • Specna Arms M4 Keymod FLEX™ Gen2

  • Hi-cap magazine (300 BBs)

  • Flip-up sights

  • M90 spring

  • Specna Arms stickers

  • User manual

Important Setup Instructions

To use the rifle, you must activate the HAL ETU unit by following these steps, otherwise the gun will not respond:

  1. Set the fire selector to Safe

  2. Connect the battery and wait 3 seconds until you hear a beep

  3. Pull and hold the trigger for 5 seconds until another beep is heard

  4. The rifle is now ready to use

Specifications

Performance
Muzzle velocity
377 fps
Blowback
NO
Inner barrel length
365 mm
Build
Material
ABS / Plastic
Weight
2345 g
Gearbox version
V2 - ESA(TM)
Mount type
KeyMod
Muzzle thread
14- (mm)
Charger type
NO
Battery type
Buffer stick
Power & magazine
Battery connector
T-Dean
Magazine capacity
300 rds
Magazine type
High-cap
Battery included
NO
General
Variants
FLEX(TM) Gen2
Colour
Black
Body/receiver material
ABS / Plastic
Mounting System
KeyMod
Outer length MINIMAL (mm)
795 (mm)
Outer length MAXIMAL (mm)
875 (mm)
Thread (mm)
14- (mm)
Nozzle
Metal
Magazine material
Plastic
Connector type
T-Dean
Battery Charger
NO
High-cap / Mid-cap
High-cap
Recommended weight of ammunition
0, 25g - 0, 28g
Weapon accessories
Yes
Hop-Up chamber material
Plastic
Amount of piston teeth
14
Bearings (mm)
8 (mm)
Piston head
Plastic
Spring guide
Plastic
Processor unit
YES

Reviews

No reviews yet. Know this product? Be the first to share what you think.

Customers also viewed

Airsoft Bazaar B.V. · Frankrijkstraat 4, 5171 PR Kaatsheuvel · Chamber of Commerce (KvK) no. 99363534

© Airsoft Bazaar - All Rights Reserved 2026

Responsible disclosure