Huma-Air regulator for the BSA ULtra mmc
Bsa Ultra MMC Regulator (external) By Huma-Air
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Huma-Air external pressure regulator for the Bsa Ultra mmc airrifle.

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€ 97,50
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Bsa Ultra MMC Regulator (external) By Huma-Air


This regulator is specialy designed for tuning your Bsa Ultra mmc airrifle. It’s very easy to install on your rifle, just depressurize the rifle, unscrew the pressure tube and screw the regulator between valvehouse and pressure tube and your are finished.*

We copied the original Bsa valve body thread to allow the body of the regulator to be screwed directly to the valve body and air cylinder and we designed it for a wide pressure range (70-150 bar) to suit sub 12 ft/lbs (UK) and high power FAC models.


The benefits of the Huma-Air, Bsa Ultra MMC tuning regulator (external) are: 

  • Higher accuracy of your rifle due to the elimination of the pelletspeed fluctuations
  • A constant pellet speed over the full working pressure range
  • It will give you a better shotcount and a full flat shotstring immediately.The regulator housing is made of extremely tough 42Cr steel
  • Tested for a working pressure of at least 3x the working pressure of the rifle, for everyone’s safety
  • It uses a long stroke piston that gives great consistency
  • The regulator body and the housing are one piece, so no chance of the regulator moving inside the cylinder
  • The one piece body and regulator housing also reduces the possibility of leaks
  • The regulator piston is captive and does not need any adjustment or extra work to keep it in place
  • DIY fitting is a real option for the most people
  • High quality bluing, same colour as the original BSA pressure tube
  • Adding a regulator to your airrifle will probably give you the biggest benefit in the tuning process

When you order your Huma-Air, Bsa Ultra MMC tuning regulator (external) you will receive:  

  • Your regulator preset to your own wishes
  • A pressure scale in Bar’s on the regulator, for fine-tuning or re-adjustment
  • We will include a “Huma -Air regulated” breech sticker
  • Fitting instructions as pdf download

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 individually assembled, tested in a computerized simulation program 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.
Huma Air provides a 2-year warranty on their regulatiors. Excluded from warranty are shipping costs and parts that are subject to normal wear and tear such as o-rings and valve discs.


Pressure settings of the Huma-Air, Bsa Ultra MMC tuning regulator (external)

The Huma-Air, Bsa Ultra MMC tuning regulator (external) comes preset on the most common pressure setting according to your choise of barrel and caliber, or we will adjust it according to your personal wishes. The length of the barrel is measured from the magazine until the tip of the actual barrel (not the end of the shroud). After fitting the regulator, always check the powersetting of the rifle and finetune it when needed to stay within legal limits.

Due to his length, this reg has a restricted airvolume, so this makes it specially suitable for the 12 ft/lbs – 16 Joule versions. The maximum power of the reg is about 25 ft/lbs – 35 Joule with a 47 cm barrel. If you are looking for a higher power regulator for your BSA mmc rifle please take a look at our high power internal regulator

* Please remove the brass restrictor part out of the valvehouse and check if your transferport is between 4 - 4,5 mm. Otherwise open it up for best performance


Shipping & payment

We ship worldwide with tracked priority shipping. We ship these pneumatic parts well packed for safe and undamaged arrival in the country of destination. As the purchasing party you are responsible for checking that this product is legal according to your local laws and regulations. We ship on your behalf and therefore Huma Air can not be held responsible for any legal issues in the country of the recipient.

You can pay safely and secure online by means of all major payment providers, like paypal, and credit cards companies.


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Nick Yates - 09-01-2021 19:02

Well pleased & very easy to fit. Couldn't have ordered it at a worse time, ie just before Xmas & the Calais /Dover Lorry gridlock but still arrived pretty quick.

Gareth - 01-02-2020 20:29

Fantastic quality and a perfect fit , a piece of cake to fit and adjust and will most certainly stop the power rise and fall . If it's adjusted to get your rifle close to 12ft/lbs the shot count won't really increase .
Excellent value and service, highly recommend . 🤓

Ken jackson - 18-07-2018 03:33

The regulator Got rid of my dreaded up and down power curve thanks huma

Louis van Hövell - 12-04-2018 23:21

Excellent product. Thank you

darrell lee - 26-07-2017 17:33

i have used all the magic oils to improve accuracy with only a little success but these things work i have a 22 ultra and the increase in accuracy and consistency is excellent makes the gun so easy to shoot

Jesus Euri - 21-12-2016 13:23

Todo perfecto. En doce días en casa. Un acabado perfecto y muy fácil de montar. Muy satisfecho.

Chris Palmer - 28-08-2016 16:29

Excellent build quality, and value for money in regard to the increase of performance from the rifle.

Hennie - 14-08-2016 09:14

Excellent. It fits my BSA Ultra (mmc) perfectly, a simple screw on job. Got 10 more shots out of the gun and all the shots were extremely consistent. Was worth the spend.

Greg Freeman - 07-07-2016 15:33

This is my second regulator purchased from Huma air. I'am very pleased with it and it is a huge improvement of my rifle!