Nielsen Sonic 45 Telescope rear

New rear end for Nielsen Sonic 45 muffler. Fits with Sonic 45 front.

To ensure perfect fit between the parts, a new assembly piece is also included.

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

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

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

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

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