Please read the notes below.
        Please hit F5 to refresh the website to ensure that you are looking at the latest version.     

We will no longer be doing HPA Conversions, I am no longer
able to source the correct parts at a reasonable price without
having to buy them in bulk lots.


 Home  Full Tune 9oz. ConversionKits and PartsContact & Orders



This is my Passion, but not my day job...
This is a hobby for me, my prices are just over cost, to cover expenses.
Although I always do my best to help everyone in a timely fashion,
sometimes its just not possible.
Please be patient.

The 850 store offers a Full Tune along with the most popular mods and conversions for the Hammerli / RWS 850 Air Magnum.

We can convert your 850 into a Powerful and accurate rifle with solid performance at a reasonable price.

The RWS / Hammerli 850 is an exciting low cost, high quality and extremely fun airgun to shoot.
After the tune, it's accuracy rivals some of the best out there. Capable of producing true single hole 8 shot groups at 20yds.
Typical average velocities are:

Pellet weights used in testing:
7.9gr for .177
14.3gr for .22 

CO2 at 85F:
.177 800fps
.22  700fps

Accuracy and velocities are guaranteed. (on all new rifles)

There are many options for the 850 . They will be listed along with all the different conversions. Please follow the links at the top of this page to learn more.

Please check the new Shipping charges... sorry folks...

Standard disclaimers. Pease read:

1. Due to the variables that exist in all airguns, quoted velocities are approximate and represent the average we have experienced to date.
     It is unreasonable to expect a gun that was slow out of the box to achieve better than average, post tune output.

2. Accuracy guaranteed only on rifles purchased from me. I test all rifles I order prior to modification and return any that are not acceptable.

3. Although I try to keep this page as current as possible, please call to get the most recent prices.

4. CO2 and High Pressure Air are dangerous and can Kill or Seriously injure you.
    You use these items and services entirely at your own risk.

Back to Top

hit counter code download
html code for hit counter