Daytona VFC HK417 / G28 GBBR HPA Recoil Conversion Kit

Designed for the VFC HK417 GBBR or G28 GBBR bodies ONLY.

The Daytona Airsoft 417 Kit converts your GBBR HK417 to a HPA-powered recoil system that allows you to use AEG 417 mags. No more green gas or propane cooldown.

Standard version offers around 1.5 - 1.8J with 0.20g BBs @ 120 PSI. Low power version offers around 1.0 - 1.3J with 0.20g BBs @ 120 PSI. Note that these are averages and depending on your system (barrel length, BB weight and joule creep, installation, etc.) the results may vary.

There will be a 2 - 4 week leadtime for Low Power versions as we will need to modify them (in addition to backorder/pre-order leadtimes, if applicable).

Components Material:

Machined Steel, brass and 6061 aluminum

70 Dura synthetic rubber

Bolt Carrier Material:

Steel bolt with brass bolt tank

Power  Adjustment Range:

1.4J ~ 2.3J

Operating Pressure:

90 ~ 155 PSI

Rate of Fire:

650 ~ 750 Rounds per Minute

Range test:

https://www.youtube.com/watch?v=vDTS1PGO9tQ

Stress Test:

https://www.youtube.com/watch?v=pR3kim5GjV8

The Daytona Airsoft System kit means you can have even more recoil, louder noise than GBB system, and increased effective range like fusion engine, without spending a fortune on GBBR mags. It requires around 2000-4000 bb break-in period where a small number of fliers and chopping of bbs may occur. This is normal while the system is breaking in.

You are required to install an AEG barrel made of either brass or steel. Never use aluminum barrel since it will be bent by hop up set screws. You also need to prepare an HPA tank and Redline regulator with single QD disconnector wide bore airline. 

During the break-in period, please keep lubing your gun with getsome 1000 lubricant. Only use the quality BBs that you intend to use for gaming during break-in, never cheap out.  As soon as all your shots are consistent you can turn on the gradually (1/8 turn each time) until you reach your designated trajectory.

Installation guide and more:

https://daytona-airsoft-support.gorgias.help/en-US