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The finest internal upgrade package for your TM Recoil, as used by Matt the Musketeer and Hype Airsoft aka Will Greenwood.

This build contains every single internal upgrade along with a few essential external accessories and can be configured to give any achievable power level or rate of fire. 

When no expense is spared, the result is truly stunning. 
Absolute performance coupled with extreme reliability and the utmost attention to detail. 
This build also comes with our full 6 month parts, labour and postage warranty for complete peace of mind.


We always keep this package up to date with all of our latest developments.

For 2024 all of your Longsword builds can be set up for 11.1v LiPo usage if requested.
Extreme trigger response meets extreme reliability! 

To upgrade your TM Recoil to 'The Longsword' spec, the following is included:

Parts and Work:

  • Full Recoil Service including FPS Softair NGRS Cylinder head, KoA Viton piston head o-ring and FLT NGRS Steel Bushings!

  • Next-Generation Leviathan MOSFET 

  • MOSFET Installation with LiPo Mod using Genuine Deans Ultra!

  • Custom KoA 3D printed wire cover (M4/416 original stocks only)

  • Prometheus/SiegeTek Recoil Sector and Spur gears (depending on availability) coupled with a Lonex Spiral Bevel and Pinion (As brushless o-type armature availability allows)

  • FPS Softair/PDI Steel Cylinder: A, B or C

  • FPS Softair Carbon Fibre Recoil Piston with full rack of steel teeth

  • FPS Softair Recoil Piston Head

  • FPS Softair Bearing Recoil Spring Guide

  • Eagle6 Main Spring: 300-500fps

  • Eagle6 Enhanced Recoil Spring (M4/416/417)

  • T238 Speed Adjustable Brushless Motor

  • EdGI Brass Barrel (upgrade to Steel available depending on availability) or PDI Steel 6.01

  • A choice between an R-Hop Installation with precision cut flat nub or (best for ammo over 0.32g)

  • PDI W-Hold 50D Hop Rubber with precision cut flat nub (best for ammo under 0.32g)

  • FPS Softair Carbon Recoil Tappet Plate

  • FPS Softair Aluminium NGRS Air Nozzle

  • Laylax Trigger Lock Pin (M4/HK416/417)

  • Laylax Frame Lock Pin (M4/416/417/SCAR)

  • Laylax Hard Castle Nut (M4/416) or Laylax Hard Stock Button (SCAR)

  • Genuine Deans Ultra Stock Wiring Loom (SCAR) or Laylax ASAP Sling Plate (M4/HK416)

  • Labour

We are now able to supply and install the awesome Retro Arms CNC Recoil Gearbox Shell (M4/HK416/HK417 ONLY). 

This beast is virtually indestructible and allows for the use of Ezo Japanese J-Caged 8mm bearings for significantly less friction, which drastically improves the efficiency.

KoA Ultimate Recoil Package - The Longsword

  • Please note that all custom work will be added in to our queue, which is typically 3-4 days long.

    R-Hop installations will require outdoor range testing, which is weather dependant. We're based in Scotland, please be aware it rains often here and this may delay range testing.

    Certain work (custom tracers, EdGI Steel barrels, certain ratios of gears not generally held in stock, custom designed 3D printed parts etc) may significantly extend the turn-around time for your build.

    We will email you with details about your slot; collection can be arranged any time before your slot is due.

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