• Air Arms S 400 SPORTER,  PRECISION
  • AirArms S400, S410, S510, TDR and similar models
  • AirArms S400, S410, S510, TDR and similar models
  • Air Arms S 400 SPORTER,  PRECISION

The easiest and fastest installation regulator in the world.

Airgun Regulator with quickfill can be used in Air Arms S 400 SPORTER or PRECISION.

  • 250 char. max
Caliber: .177 /4.5mm
Required energy with regulator: 7,5J / 5,5 ft/lbs


Airgun Regulator together with quick fill can be used in Air Arms S 400 SPORTER or PRECISION.

Videos for installation and proper use regulator in the airgun Air Arms S 400 SPORTE PRECISION

Here you can check video installation for AA classic regulator and quickfill

Setting output pressure on regulator

What to do when your output pressure increasing over time? This is most likely caused by dirt on o-ring on plastic screw.

In this video is shown how to remove dirt and replace o-ring. In video is used Gunpower regulator. Procedure is the same for other regulators.

Video how to take regulator out of regulator body

Air Arms S 400 SPORTE PRECISIONair rifle pressure regulator installation instructions

It is appropriate before reading the instructions look at the video instructions and then read the instructions for avoiding common mistakes during installation AirArms

Installation is very similar to normal AA classic regulator ( with the regulator is send brass terminal which is not used in this airgun )

Mount regulator

Drain all air from airtube and Check inside of airtube and o-ring on regulator, all should be clean without any damage. Spray thread inside of airtube and o-ring on regulator with silicone spray. Push regulator inside airtube (brass regulator towards quickfill). Then push air chamber in airtube too. It should be pushed in such depth that you see approximately half of the inner thread inside of airtube. By screwing it back ( with airchamber inside ) you get your regulator in the right position. Installation is complete.

Before filling is needed stretch cocking lever rifle, otherwise air will still pass through the barrel. When filling is necessary to fully open the valve diving bottle until in airtube is 70bar or more, then it is possible fulfill the a normal speed.

Setting pressure of airgun regulator

Altaros regulator output pressure can be set from 100bar (1450 PSI) to 150bar (2200 PSI). For a quick setting is on regulator engraved scale according to which the desired output pressure can be set. The total scale range of 100-150bar corresponds to approximately 1/2- turn. Unscrewing, or screwing setting screw more than 1 turn may result in a malfunction of the regulation and scale will not show you regulated pressure. Groove on red marked half of setting plastic screw represents pointer which shows you currently set pressure on the scale. To change the pressure on regulator, just simply rotate the set screw with the flat screwdriver in the appropriate direction according to regulator scale.
Regulator pressure scale with three different settings

Recommended output pressure to 16 J is in the range of 100 to 120 bar.

Shipment contains

  • Regulator
  • Brass handle for regulator
  • Air chamber
  • Spare o-rings

Recommended settings rifle after installing the regulator. Set a side screw that restricts the flow-through channel in the barrel to achieve minimum consumption at 16J.

Remove the side screw, which is interfering in the channel and then try screw it little by little back until it begins to decrease Shooting speed.


Never unscrew regulator brass screw plugs! If you do so the regulator immediately stops working and repair is only possible at the manufacturer! Regulator must be installed no later than six months after purchase. Ideally immediately upon delivery.

You must keep maximum cleanness in the entire pressure system (airtube and outer o-rings).

The disassembly of the internal parts regulator or failure at the exact installation procedure means that you can not claim the warranty. Since the regulator is not original part from the manufacturer’s, installation is on your own responsibility.

Results with installed regulator in air gun AirArms S 400 SPORTE PRECISION

Unfortunately, we do not have results for this airgun yet. If you have chrono and this regulator we would be more than happy to add your results.

This regulator was used for example in Italy on 7,5 Joule .

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