Just what is that thing on the end of an HW97K barrel?

[Deerstalker]

I am with you on springers not requiring further noise reduction. I have owned a lot of springers over my 50 plus years of Airgun experience. I can’t say I’ve had a springer I would consider loud. I think the main thing is you don’t want the neighbors to think you’re shooting a firearm. Springers do not sound remotely like a firearm. I do understand that it depends on your neighborhood and that some require total stealth.

This is the sound of my HW95K .22 at about 17 FPE recorded via an iPhone at 5' to 7'.

Weihrauch HW95K factory moderator, 2018 year build.
Moderator weighs 4.32 oz, 122.6 g, 1892 gr. Barrel without moderator = 12.188”, (12-3/16”, 309.575 mm), from thread end to breech block end. Moderator is 6” long. Female threads start 2.3” in from beveled end of Moderator. Thread is 3/4" long & 1/2" diameter with 20 threads per inch. Barrel length = 15.75”, 400 mm, from end of moderator to breech block end. HW95 barrel is 16 mm diameter & rifle twist rate is 1:16. HW95L total rifle length = 41.875”, 1063.625 mm, from end of moderator to butt center. Rifle is 29”, 736.6 mm, from end of moderator to end of compression tube.