Sound level meter testing of the KOI .22 caliber airgun suppressor from DonnyFL.
Airgun used is Prod (Marauder Pistol) which has been converted and tuned.
Three suppressors used are from Hill, DonnyFL and Rocker1.


For Hill products please visit: www.hillairgun.com
For Troy Hammer please visit: www.annihilatorairgunsandtuning.com
For DonnyFL please visit: www.donnyfl.com
For great reviews please visit: www.hajimotoproductions.com


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