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Compensator for Beretta CX4 Storm, Hammerli 850, Umarex EBOS and Walther Dominator

Only $37.99
  • Save $11.40 (23%)
  • Code: 225-1005 $37.99
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Muzzle Brake detachable compensator adds stability and a tactical look to the gun, while extending the length. The front sight sleeves over for a friction fit, additionally there is a set screw to secure the compensator to the barrel. Compensator is compatible with the following models:
  • RWS 850 Magnum
  • Beretta CX4 Storm
  • Umarex EBOS
  • Walther Dominator
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  • ManufacturerHammerli
  • ConditionNew
  • Warranty1-year limited warranty
  • Weight0.50
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Average Customer Review
5.022 Reviews
82% (18)
14% (3)
5% (1)
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By MichaelUSAJune 21, 2018 Verified Purchase

I put it on my 850 magnum and the fit was perfect easy on and install

Great for the models it's made for


By FrederickUSAMay 19, 2018

does cut noise level a little,wrapped it in bike inner tube someone recommended and that helped

looks good,will suppress noise with modifications

By DavidUSAFebruary 1, 2018

The compensator is a cool addition to the 850 mag. I wrapped gorilla tape very cleanly around it covering the holes which looks awesome not cheesy at all. The sound is next to nothing! Incredibly quiet!

Looks amazing, excellent as a suppressorwhen wrapped.

A little expensive for what it is.

By RogerUSAJanuary 17, 2018

Takes quite a few shots before it quiets the gun down but that is fine.

Very easy to install. Lightweight. Great desighn


By GregoryUSADecember 23, 2017

I gave it only 3 stars as it doesn't seem to muffle the sound much but hey, looks cool as hell.

By WestglNovember 30, 2017

This compensator is for a Hammerli 850 .22 cal i wanted some to be stealthy when shooting in my yard, i see other used electrical tape wrapped over exterior. This is Unacceptable and looked very ugly and though glue would un adhere during warm summer. I went to bike shop asked for all thier old mountain bike inner tubes they gave me 4 each for free. Took them home and cut from one end to first mounting screw. I wiped some coconut oil inside inner tube to make it easier to slide over compensator. It fits tight but no problem. I wiped some coconut oil on exterior of compensator cover to clean it and lube it. Looks Great, and is wisper quiet.

Looks great with a rubber cover on it (see above) much reduced sound with a rubber cover on it

None it's a decent compansator and worth the money

By victorUSAJune 12, 2017

Put this compensator on my hammerelli 850 I 177. Really made the airgun more accurate. Some noise from airgun is reduced. Airgun was already back yard friendly but the compensator did help some Would recommend to anyone. Also adds to appearance of airgun.

Easy to install had to move front sight but not a problem there is a second hole to mount front sight


By SteveUSAJune 7, 2017

I purchased one a few months ago and fit it onto a RWS Model 54 .22 that I have almost 11k shots on right now and mounting was a breeze except for the stock barrel shroud ended up being short after installation so I wrapped the barrel and break with a cloth camo tape to conceal the small gap. I Literally dropped my group sizes from what was a dime size group already with that gun at 25yds to very close to hole in hole consistency groups as soon as it was mounted. It did make a noticeable difference in noise buffering as well but I did wrap the break with cloth camo tape as stated earlier which covered the outside holes so that may be part of the reduction in noise as well as the break itself. I ordered a second break for our Diana 56TH which is very new still under 2k shots on it and the same benefits were seen with this gun as the prior gun.

Increased accuracy....slight noise buffering....light weight.

added length to the gun

By GaryFebruary 23, 2017

Looks neat....a bit overpriced for what it is. I thought it might quiet the sound a bit, but even with the ports covered, it seems to be about the same as without the compensator.



By JohnUSAJanuary 23, 2017

I have one of these on my Beretta CX4 Storm and another on a EBOS. These are metal, not plastic, and very good build quality. 2 hex screws, so they stay in place. Great design really complements the gun.

Build quality & look. 2 hex screws to keep in place.

On the EBOS, you have to get it set on the barrel just right or it sends the bb's flying wildly.

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will this fit on a remington airexpress air rifle ?

asked William from USA

I am not familiar with the Remington Airexpress. I mounted this compensator on a Beretta CX4, which has a barrel diameter of .584 inches. It slid onto the barrel 1 inch and snugged down with set screws. If the barrel on your Remington is similar diameter, this compensator should work.

Jimmy from USA

If you mean the Remington Express Air Rifle, the answer is no. Take a look at pics of the muzzle on an Umarex Ebos and you will see the type of barrel this part is for.

HB from USA

Does anyone know/if this will fit a RSW Diana 350 Magnum

asked Phil from USA

will this compensator fit an umarex steelforce bb rifle?

asked william blakeley

No. There is a metal flash suppressor or compensator that already comes on the Steelforce from the factory. This gun will not accommodate this particular compensator. I have the Umarex EBOS fitted with this compensator and I had some problems with it. Once fitted on the end of the barrel, there is about a 3 inch gap between the end of the barrel and the hole at the end of the compensator. I had several BB's get trapped inside the compensator after they exited the barrel because the two did not line up perfectly. I had 1 BB chip the outside hole or face of the compensator as it was trying to travel down range. I drilled out the hole to make it bigger so the BB's could pass through it. Overall, it was a bit of a hassle and I wouldn't like to do it again. Hope this helps.

christopher from USA

Does it fit the .22 850?

asked Trevor from USA

Yes, perfect fit easy installation.

Raymond from USA

How long is the compensator?

asked david from USA

Will this work with the px4 storm?

asked Robert

No it will not fit that gun.

Steve from USA

What is this primarily used for? Its just for looks thats way overpriced for a aluminum cylinder. Why not just use a tin can and put holes then theyd be twins.

asked Living_Laser

It is mostly for looks though it can dampen noise a small amount.

Steve from USA

Dose this fit for a Umarex EBOS Tactical BB Rifle

asked Edwin

will this fit a umarex ebos.

asked ralph from USA

Yes of course. See the demo video in this web page.

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