Free Shipping on orders over $179
Talk to an Airgun Specialist 1-866-477-4867
Memorial Day Sale - Use code: HERO to save 11% OFF!

Hammerli 850 12 gram CO2 Adapter

Use two 12g CO2 cartridges, vice one 88g CO2 cylinder
  • Code: PY-A-1136
Out of Stock
Top Picks
2x12g CO2 Adapter for Umarex 850 Magnum. Don't have any 88g cartridges handy? This useful converter allows you to use two 12 gram cartridges in your Hammerli 850 Magnum!
Read More
  • ManufacturerUmarex
  • Condition Life Extended
  • Accessories Type CO2 Accessories
  • Warranty 1-year limited warranty
  • Weight 0.50
Read More
Average Customer Review
5.012 Reviews
100% (12)
0% (0)
0% (0)
0% (0)
0% (0)
Write a Review
Sort by:Date Rating
By StephenUSAOctober 29, 2018

This a excellent offering for a 12g CO2 alternative to the standard 88/90gram full size bottles.

Can be removed without the need to discharge the carts!

By FrederickUSAMay 19, 2018

this has more than paid for itself in cartridge savings,you but bulk cartridges st a fraction of the cost bbn of the larger ones,also good if you are not going to be shooting that many rounds,worth it

By MichaelUSAApril 19, 2018

I really like this adapter, It is great for when I don't want to use the 88 gram co2. plus I can take it out of the gun without having to leave the gun fully charged which will put pressure on seals and use it again.

Lets one use two 12 gram co2's and one can take it out of gun

Not much I put a penny between the two cartr. for a tighter seal that's all a great accec.

By KrustydustiMarch 29, 2018

It's a great gadget for Co2 12gr I get about 75 shots.

Machine very good!


By charlesUSANovember 1, 2017

See above headline

Great quality, easy to use


By JohnUSAJuly 17, 2017

I have had several different air rifles in my time. I love this rifle, it is extremely accurate and well made. If you are looking for a CO2 rifle then look no further. You will not get another rifle in thes class for under $300.00.

I love this rifle, it is extremely accurate.

The only thing I would change is the safety to metal instead of plastic.

By victorUSAJune 20, 2017

great product easy to use fits and works the way it was described a definite must if you don't have a lot of time to shoot

able to use only what you need when you only want to shoot 40 or 50 shots


By JohnUSAJanuary 3, 2017

Well made,cost effective product for when you just want to shoot 60-150 shots.

By AnthonyUSADecember 22, 2016 Verified Purchase

This is a top quality item and a 'must' if you are going to do a lot of shooting with your Hammerli 850. I've had mine for over a year, and it has been flawless -- both the rifle and this adapter. It was a tough call, spending another $100, but it has already paid for itself. It is easy to use and a couple of other reviewers have pointed out it's best to drop a penny in between the two cartridges for positive engagement of both. The adaptor may also be removed from the rifle without shooting out all the air. Good stuff. Treat yourself, get one of these.

Saves money in the long run; easy to use.

Price. They would sell four times as many if the price was $50-60.

By Peter G.December 12, 2016

I don't shot a lot so using an 88 gm CO2 cylinder means storing the gun with the active cylinder and risking possible seal damage. The 12 gm adaptor can be removed without losing CO2 and risking seal damage. This is a superb offering.

CO2 flexibility

View Next


Login to ask someone who bought this product.
Create Account

Does anyone have experience using this with other Airguns such as the Sig MCX/MPX or the Walther lever action? Thanks in advance.

asked David from USA

I want to know if this works with the sig mpx?

asked Ladynightviper from USA

well this fit on action lever Walther

asked ef

No, it is too long and the butt cap does not fit.


Walther/Unamex makes a 2 x 12 gram adapter for the lever gun-it just is not available in the United States. This adapter will function in the Walther lever gun, but it is my understanding that it is slightly longer than the Walther/Umarex version necessitating a slight modification to the butt pad on the lever gun for it to fit correctly. Otherwise the screw-in fittings are the same.

Jeter from USA

Will this fit benjamin as392

asked William Lee

Will this unit fit a Gamo Extreme CO2 rifle?

asked Barry Esmore

Will this fit the Hammerli 850 rifle?

asked ronald from USA

Yes. It is made by Hammerli specifically for the 850 Air Magnum.

Jim B.

Yes.......that's what it made for.

Carlton from USA



I got a co2 air gun, an Extreme co2 Gamo. Doe's this adapter work on my gun, because it is a cause of frustration to waste the expensive 88 gr co2 cartridge when you shot just a few shots and you must remove the cartidge to avoid damaging your gun? Thank you for answer. Best regards, Constant O.

asked Constant from Canada

It can work with many guns that would use the .88 gram Co2 canisters, though it does not fit all guns.

Steve from USA
View Next