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Video Review: Umarex HK416 A5
We are testing a faithful replica of the fifth generation assault rifle of the same name manufactured by the German company Heckler & Koch.
1 minutes Video 
The universal sound moderator Umarex SD5 is primarily designed for use on short
firearms – pistols and revolvers. Two adapters are used for its installation:
left-hand M14 and 1/2 UNF.
8 pcs in stock,
Estimated Delivery:
July 27 - 30.
$ 44.7
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- Excellent customer support from specialists
- Warranty:
- 24 Months
- Manufacturer:
- Umarex
- EAN:
- 4000844871725
- Item ID:
- 5.8491
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PRODUCT DESCRIPTION
The universal sound moderator Umarex SD5 is primarily designed for use on handguns – pistols and revolvers in calibres 4.5 mm and 5.5 mm.
Its high efficiency (20 dB) is thanks to the 4‑chamber design made from a combination of polymer and aluminium machined using CNC technology.
To ensure maximum compatibility, it is supplied with two threaded adapters – left-hand M14 and 1/2 UNF.
Package contents
- Umarex SD5 sound moderator
This Product Is Listed in the Following Categories
Parameters
- Manufacturer:
- Umarex
- Diameter:
- 25 mm
- Weight:
- 70 g
- Thread:
- 1/2x20 UNF, M14 CCW
- Material:
- Aluminium, Polymer
- Length:
- 137 mm
- Warranty:
- 24 Months
Customer Reviews (9)
9× rated
- 7×
- 2×
- 0×
- 0×
- 0×
By submitting your review, you are agreeing to our review guidelines. It will be published once we make sure it corresponds with our terms and conditions.
Miloslav Duroň
20.06.2026
Machine translation
I chose this moderator not only because of the price, but also because of how
compact and light it is. I wasn’t expecting any miracles, so I was all the
more surprised by its noise reduction on my Kral arms puncher mega 5.5 mm. By
ear, I’d say about 40–50%. It’s like shooting from a Gamo arrow magnum
5.5 mm.
- On my PCP Kral arms Puncher mega 5.5 mm it suppresses more than I expected. Great.
Questions about the product (5)
N
Will this noise modulator fit the Umarex Colt Defender .177 Caliber BB gun Air Pistol
M
Hello, unfortunately the moderator is not suitable for the model you mentioned. The threads do not fit together.
A
Having shot grouping issues with my Umerex moderator. Sound reduction is very nice but shots are NOT where I'm aiming at. Any suggestions would be helpful. Using AEA 18.3gr ammo in .22
M
Hello, I would like to ask you to contact us via email with this question. If your shoting is fine without the moderator installed, it will probably need to be sent in for testing.
R
Well it fit a crosman R1
M
Hello, yes, the moderator can be used.
Z
Will this product fit onto a Sigsauer emperor scorpion
M
Hello, no, Sig Emperor Scorpion does not havy any thread for mounting a silencer.
R
looking for a moderator for Umarex Komplete?
M
Hello, we do not have the model you mentioned in our offer and therefore we do not have the possibility to verify compatibility. We cannot test it.
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