Back cover for SubSonic .22

Threads and Sizes

Metric Thread	Empty Found	Max size
M13x1	1/2 “x20	Max 6
M14x1	1/2 “x28	Max 7
M15x1	5/8 “x24	Max 8
M16x1
M17x1
M18x1

Our “Max size” is the maximum size caliber that the muffler can be used for.

Too large max size in relation to caliber, will mean significantly reduced efficiency for the muffler.

Caliber recommendation

When choosing your muffler, it is important that you choose a muffler that fits the caliber you are using. On the graphic you can see which calibers can be shot through the muffler, as well as how well the amount of gunpowder can be handled by the muffler.

Nielsen Paradox 40 is primarily aimed at small and medium-sized calibers. It can be used effectively up to .308, but from here the effect drops significantly.

Technical data

Dimensions
Weight: approx. 313 grams
Diameter: 40 mm
Length: 225 mm
Elongation of pipe: 125 mm
Maximum pipe thickness: 23 mm

Guarantee
In Denmark, all Nielsen Sonic’s products are covered by a 5-year total warranty.

Maintenance
Never shoot the pipe too hot. If you shoot single shots, especially in humid weather, it can be an advantage to give a spray WD40 at the end of the damper.

– Clean as needed