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  • New
Automatic Electric Airsoft Gun M4 Flex, upgraded
  • Automatic Electric Airsoft Gun M4 Flex, upgraded
  • Automatic Electric Airsoft Gun M4 Flex, upgraded
  • Automatic Electric Airsoft Gun M4 Flex, upgraded
  • Automatic Electric Airsoft Gun M4 Flex, upgraded
  • Automatic Electric Airsoft Gun M4 Flex, upgraded
  • Automatic Electric Airsoft Gun M4 Flex, upgraded

M4 Airsoft AEG, Upgraded – Steel Gears, 8 mm Bearings, Quick-Change Spring, Quad Rail

Upgraded M4 airsoft AEG with a reinforced V2 gearbox: steel gears, 8 mm bearings, a steel-rack piston and parts rated up to an M140 spring. Change the spring in seconds through the stock; a spare M90 spring for indoor games is included. About 113 m/s (370 FPS), quad rail, adjustable stock. Available with or without a battery and charger.

Battery and charger
€175.00
Tax included
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Description

Most entry-level M4s are fine until you want to change something. This upgraded M4 AEG is built for that moment: its internals are reinforced from the factory and the spring changes in seconds, so the same rifle can play an outdoor field today and an indoor CQB game tomorrow.

Upgraded where it matters

  • Steel gears and 8 mm bearings in a V2 gearbox.
  • Polycarbonate piston with a full steel rack and a type 2 cylinder.
  • Parts rated for an M140 spring, so there is headroom if you want more power later.
  • 6.03 mm precision inner barrel and adjustable hop-up.

Spring change without tools

Remove the stock and the spring slides out: no tools and no opening of the gearbox. A spare M90 spring is in the box for buildings and CQB fields with lower power limits.

Ready for your accessories

  • Rails on all four sides of the handguard.
  • Folding sights that drop out of the way of a red dot.
  • Adjustable stock with single-point sling mounts.
  • Suitable for left- and right-handed shooters, fits standard M4 magazines and takes a silencer.

Specifications

  • Type: electric AEG, semi / full auto
  • Velocity: approx. 113 m/s (about 370 FPS) with 0.20 g BBs
  • Gearbox: V2, steel gears, 8 mm bearings, quick-change spring
  • Inner barrel: 6.03 mm precision
  • Length / weight: 72–81 cm / 2.1 kg
  • Magazine: 300 rounds, fits standard M4 magazines
  • In the box: rifle, magazine, spare M90 spring, cleaning rod
  • Battery and charger: optional, choose at the top of the page

What else you need

Choose in the battery and charger option at the top of the page: add a battery and charger and the rifle is ready to play the day it arrives, or leave the option at none if you already have an AEG battery. A spare rechargeable NiMH battery is handy for long games. Add a red dot sight for the top rail and 0.23 g BBs for the field.

Dispatched from Lithuania, usually on the same working day as your payment, by tracked DPD courier. Delivery takes 2–5 days depending on your location, with no customs inside the EU.

Other AEG rifles

Product Details
Reviews
Grade 
Antonio M.
09/22/2026

Gun works perfect!

Gun works perfect!

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M4 Airsoft AEG, Upgraded – Steel Gears, 8 mm Bearings, Quick-Change Spring, Quad Rail

M4 Airsoft AEG, Upgraded – Steel Gears, 8 mm Bearings, Quick-Change Spring, Quad Rail

Upgraded M4 airsoft AEG with a reinforced V2 gearbox: steel gears, 8 mm bearings, a steel-rack piston and parts rated up to an M140 spring. Change the spring in seconds through the stock; a spare M90 spring for indoor games is included. About 113 m/s (370 FPS), quad rail, adjustable stock. Available with or without a battery and charger.

Write your review
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