The regulator is vented to the atmosphere for excellent regulating behaviour and no creeping up in power on the long term. It has a separate volume bus (plenum) matching the caliber and preferred power.
The reg body is only 16 mm long and the regulator neck is round 13 mm with a length of 15 mm. So there is almost no lose of air volume in the pressure tube.
A simple modification to your air rifle what will result in excellent shooting behaviour and very consistent pellet speed.

The benefits of the Huma-Air regulator for your Air Arms HFT500:

• Higher accuracy of your rifle due to the elimination of the pellet speed fluctuations
• A constant pellet speed over the full working pressure range.
• It will give you a better shot count and a full flat shot string immediately.
• Adding a regulator to your air rifle will probably give you the biggest benefit in the tuning process.
• Often the rifle will make less noise due to better balance in air usage 

When you order your Air Arms Tuning Regulator you will receive:

• A pressure scale in Bar on the regulator, for fine-tuning or re-adjustment.
• We will include a “Huma-Air Regulated” breech sticker.
• Fitting instructions as pdf download. 

Pressure settings of the Air Arms regulator

The regulator comes preset on the most common pressure setting, or we will adjust it according to your personal wishes. It is also equipped with a clear pressure scale label, so you can very easy re-adjust or fine tune the pressure setting suitable to your wishes.

• High pressure range:       100-170 bar for .25 extra heavy pellets >25 grain

After fitting the regulator the rifle's pressure gauge will indicate the regulated pressure.

Huma-Air Quality Control

Huma-Air regulators are CNC produced out of high grade aircraft Aluminum and bronze.
To guarantee a perfect product, every regulator is manually assembled, tested and adjusted to the requested pressure. 
We only use high-end materials and our belleville springs are designed for critical applications to achieve the highest repeat accuracy. This gives our regulators a repeat cycle less than 1% difference.