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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 SD4 is suitable for all air rifles up to
.25 (6.35 mm) calibre. Two adapters are included for mounting: left-hand M14
and 1/2 UNF.
Temporarily Unavailable
$ 44.7
- Secure shopping and payment
- Express delivery in 3 days
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- Customers rate us 4.4/5 on Trustpilot
- Excellent customer support from specialists
- Warranty:
- 24 Months
- Manufacturer:
- Umarex
- EAN:
- 4000844871718
- Item ID:
- 5.8490
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PRODUCT DESCRIPTION
The universal sound moderator Umarex SD4 is suitable for all air rifles up to .25 cal / 6.35 mm.
Its high efficiency (25 dB) is thanks to the 6-chamber design machined from aluminium using CNC technology.
To ensure maximum compatibility, it is supplied with two threaded adapters – left-hand M14 and 1/2 UNF.
Package contents
- Sound Moderator Umarex SD4
This Product Is Listed in the Following Categories
Videos (1)
Silencer Test
Parameters
- Manufacturer:
- Umarex
- Diameter:
- 35 mm
- Weight:
- 190 g
- Thread:
- 1/2x20 UNF, M14 CCW
- Length:
- 200 mm
- Warranty:
- 24 Months
Customer Reviews (13)
13× rated
- 12×
- 1×
- 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.
Petr Střeleček
04.11.2025
Machine translation
I was pleasantly surprised by the excellent damping, which is, however, more
effective for larger calibers of 5.5 and 6.35 mm due to the 8.5 mm
partitions.
- Excellent processing.
- Good attenuation.
- Great price.
- It's a pity that the partitions are made of plastic and not aluminum, even at a higher price.
Questions about the product (3)
J
When will you get the Umarex SD4 Sound moderator's in?
M
Hello, unfortunately at the moment we do not have a date of next restock for this item. Directly on the product page you can set a Watchdog to track the availability. Once the item is available again, you will be notified by email. Thank you for your co-operation.
C
What is this made out of?
M
Hello, the moderator is made of aluminum.
J
Does the package come with adapters?
M
Hello, the package includes two adapters - left M14 and 1/2 UNF.
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