BCA Level 1 Upgraded VFC Avalon Gladius

Custom Gun Builds

Z Custom Airsoft Work

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Level 1 Upgrade Build

-PDI 6.05mm SUS304 Stainless Steel Inner Barrel OR Lambda 6.05mm SUS304 Stainless Steel Inner Barrel (depending on availability)
-SHS Steel 14T 7 Hole Lightened Piston
-SHS Aluminum Air Nozzle with O-Ring
-SHS CNC Aluminum Cylinder Head with Sorbo Pad
-Guarder Tappet Plate with Enhanced Tappet Spring
-Deans Connector


Avalon Gearbox Includes:

-Built-in MOSFET, Li-Po Ready!
-Balanced Torque Motor with Neodymium Magnets
-Ball Bearing Quick Change Spring Guide (requires gearbox removal from a receiver)

This is a dependable, functional upgrade service for a VFC mechbox that covers all of the common failure points on the platform. The three most common failures on a VFC mechbox are piston failure, tappet plate failure, and trigger contact corrosion. This covers all three of those points, as well as other preventative upgrades like Sorbo pad installation and angle of engagement correction.

This upgrade service will give you peace of mind on your gun's longevity and reliability. You may also notice improved accuracy, FPS consistency, battery efficiency, and a quieter muzzle report.

Estimated Rate of Fire:

20 - 25 RPS with 11.1v battery

Muzzle Velocity:

300 - 450 FPS, please put your desired FPS range in the order comments, for example, 370 - 400 FPS.



  • Estimated lead time: 2 - 4 weeks
  • Product may come with orange tip
  • We recommend using .28g ammo or heavier with our barrel group setups.
  • AEG Tuning Services Provided by Z Custom Airsoft Works

Our standard turnaround time is roughly two weeks. However, we often complete the work much faster. We also sometimes experience unexpected delays due to tech backlog, unanticipated compatibility issues, etc. so our stated turnaround times are only estimates. We will not guarantee a gun returned by a specific date, but we will do our best to meet your deadlines. If the expected date does not complete a work order, we will not offer a refund or discount on the work order unless the delay is deemed excessive at our discretion.

At BlackBlitz Airsoft we care about the quality of our tech work. Upgrades and repair services performed through BlackBlitz Airsoft are guaranteed for parts and workmanship for 90 days unless stated otherwise. If a problem occurs or there is a concern with the work we have done, please contact us for troubleshooting. If it is determined that a part was defective or work was done improperly, we will provide shipping instructions and cover return shipping.

Only problems occurring during regular use are covered. User error and misuses such as using low-quality ammunition or excessive power supplies are not covered.

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