top of page

"Secondhand, Fully Checked and Tested"

Customer owned rifle from new for approximately 3 weeks

 

The FX Impact M4 is the latest iteration in the hugely successful Impact series, pushing precision and shooting capability in the airgun industry.

This airgun is available in two distinct colours – the original all-black version or the bronze version to give it just that little extra. As well as this, the gun is available in multiple configurations, including a compact and standard version, sniper, or extended for every use.

The Impact has a new design throughout without deviating too far from the M3. This has allowed improvements in all areas without changing the overall aesthetics or feel of the system.

The FX Impact M4 has a completely redesigned high-capacity magazine which are now made from much stronger materials and include a new internal mechanism to ensure the inner drum will rotate smoother even when loading the heaviest slugs available on the market. The Impact M4 also now comes standard with a new brass piston regulator that is stronger and has faster refresh rates. A far more consistent and easily handled higher bottle pressures with a max pressure of 170bar.

To further enhance the performance and shooting experience, FX have improved the overall rigidity of the Impact M4 by designing a new top plate that is much stronger and thicker which brings more strength and rigidity throughout the entire platform. The new QS trigger unit and top rail introduced have increased the comfort of shooting the Impact, as well as the all new FX grip that is more defined and comfortable to grip to.

The first major upgrade to the Impact M4 is a completely new trigger system. The FX quick set trigger has been adjusted to allow the user to change from standard, hunter, or match-grade, all with the change of one screw.

FX Impact M4 Specifications:

  • Calibre: .177/.22
  • Weight: 3.1kg
  • Cocking System: Reversible Smooth Sidelever
  • Length:860mm/34″
  • Barrel: Superior STX : 600mm
  • Magazine: .177 34 shot / .22 28 shot
  • Air Capacity: 480cc
  • Fill Pressure: 250 Bar
  • Charging: Foster QD
  • Shot Capacity: .177 475 shots / .22 500 shots
  • Trigger: Quick Set Trigger
  • Regulator: Brass Piston AMP MKII
  • Plenum:Sub12 Limited Plenum
  • Grip:FX UG1 Grip AR15 Style
  • Safety:Switch Style
  • Optics Rail:30MOA Picatinny

FX Airguns Impact M4 .177cal

SKU: S/HFXIMPACT.177
£1,400.00Price
Quantity
  • This is for UK Sale only. We prefer to have Face to Face Sales however we can do Registered Firearms Dealer Transfer to your local Gun Shop in which  there is a £50.00 charge for Packing, Posting and Admin.

    When Purchasing Airguns we Require Photographic Identification (Actual Physical ID, Not a Photo of it) which has the following information:

    • Name
    • Date Of Birth
    • Address
    • Photo

    If you do not have all this information on your ID then please bring a Secondary ID which has your Name and Address on with you such as:

    • Utility Bill
    • Council Tax Letter
    • Benefits Letter
    • or Bank Statement

    For More Information or for General Stock Level Enquiries please email dunvilles-uk@outlook.com

© 2025 by Dunvilles UK. All rights reserved. Designed and secured by Dunvilles UK

bottom of page