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SA-F21 FLEX w/ ETU
SA-F21 FLEX w/ ETU

Specna Arms

SA-F21 FLEX w/ ETU

Product Code: SPE-01-040804-00-TAN

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In stock | Usually dispatched within 24 hours
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Specna Arms SA-F21 Flex AEG Rifle: Upgraded Performance for Beginner Airsoft Players

The Specna Arms SA-F21 Flex AEG Rifle takes the strengths of the SA-F20 and adds some exciting features, making it ideal for beginner airsoft players who want a bit more out of their first airsoft gun.

Enhanced Performance and Beginner Friendliness:

  • Reinforced Nylon Body: Lightweight and strong, perfect for CQB and general airsoft use.
  • SA-ETU (Electronic Trigger Unit): Offers programmable firing modes (including binary trigger), adjustable trigger sensitivity, and motor and battery protection.
  • Quick Spring Change System: Easily modify the rifle's power for different airsoft field regulations without needing a toolbox.

CQB Maneuverability:

  • Compact Size and Lightweight Design (under 2.1kg): Move swiftly through close-quarters environments.
  • 7-inch M-Lok Handguard: Attach flashlights, lasers, or grips for personalized CQB tactics.
  • Adjustable Stock: Tailor the fit for comfort and different playstyles.

Additional Upgrades:

  • Slightly Longer Barrel (223mm) compared to SA-F20: Improving accuracy and range.
  • Steel Gears and Bearings: Ensure long-lasting internal performance.
  • Includes: Two Mid-Capacity Magazines

The Specna Arms SA-F21 Flex AEG Rifle offers an exceptional balance of affordability, upgradable performance, and features specifically designed for close-quarters combat. It's a great choice for new airsoft players who want a reliable and customizable platform to grow their skills.



We will endeavour to despatch your package within 24 hours although at peak times this may take slightly longer. Orders for RIFs may take 48 hours as we test and chronograph each rifle before shipping.

Our couriers only deliver Monday to Friday between the hours of 8am and 6pm (0800 - 1800 hours) except for local and national holidays. We do not directly control the couriers and we cannot obtain a specific delivery time from them. Delivery may be delayed by extreme weather and events and again is out of our control and accept no liability for delays caused by this.

Cost of Delivery

The cost of delivery will be added to your order total. You can select your preferred method of delivery from the options displayed at the checkout. Please select the correct option for your country to ensure that your order is not delayed.

We reserve the right to adjust shipping methods and costs but this is usually done in your favour and you will be informed by email.

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