More quiet shroud DIY

DIY Modifications to the Benjamin Marauder, like Depingers, bolt handles, etc.
Mod parts offered for sale should be posted in the AFTERMARKET section.

More quiet shroud DIY

Postby blackhawk » Sun Dec 18, 2011 2:22 pm

To improve the shroud performance, I made the internal sound structure, modifying from Sparrow22 for .22cal 27 x 129mm (sound reduction: 41dB by Mfr).
The noise reduction is extremely good at 74dB.
The below is the typical noise reduction designs; Type A is same as Marauder shroud; Type B is ACC Titan style (sound reduction: 35-38dB by Mfr); Type C is Thundertrap style (sound reduction: over 30dB by Mfr) ; Type D is low-end Airsoft style.

Note: This is for sound reduction study purpose only.
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