Please read the notes below.

**12/10/2016** - As Always, The 850 Store will close every year for vacation and it's annual R&D period,
The next Annual R&D period will start 12/01/2016 and end 02/01/2017

- No new orders will be taken during this period.
- All rifles in the current queue will be processed as promised.

**10/17/2015** - Update - I can no longer source new 850's through Airgun Depot
for a reasonable price, Going forward I will be offering tunes and conversions to
Customers 850's only.

NOTE: The 850 Store will no longer be exporting parts outside of the United States.
                                         Due to the difficulty of obtaining parts, The Kits and Parts section has been drastically Reduced.


 Home  Full Tune  9oz. Conversion  HPA Conversion
 Kits and Parts  Contact & 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 Umarex / Hammerli / RWS 850 Air Magnum.

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

The 850 is an exciting low cost, high quality and extremely fun airgun to shoot.
After the tune, it's accuracy rivals the best out there. Capable of producing true single hole 8 shot groups at 20yds.
Performance varies depending on your choice of fuel. (CO2 or HPA)
Typical average velocities
(+/-2%) are:

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

CO2 at 85F:

.177 800fps
.22  700fps

.177 1100fps (velocity can be reduced upon request)
.22  980fps

There are many options for the 850 . They are listed here, 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. Velocity guaranteed - Due to variations in the manufacture of all Airguns, velocities may vary by a maximum of 2% from quoted values. 
    Quoted velocities are approximate and represent the average we have experienced to date.

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