Description
GSL Fat Man
The GSL Fat Man suppressor is a full auto-rated, aircraft grade aluminum suppressor that is
built to handle your favorite HK MP5 or 3-Lug Barrel submachine guns, PCC or similar
firearms chambered in 9mm (or smaller). The Fat Man is an “Entry Suppressor” designed for
LEO and Military teams for room clearing and other tighter, enclosed environments (like ship
boarding). It is more compact than the ultra-quiet GSL Phoenix suppressor which as a dB
reduction of 40dB vs The Fat Man which is rated at 34dB reduction. The Fat Man suppressor
is also perfect for backyard plinking with your AR platform pistol in 9mm or smaller, or similar
Pistol Caliber Carbines in 9mm or smaller.
When using the HK 3-Lug (3-Lug) style mount, the knurled thread protectors sometimes found
on the barrels utilizing this system will often not clear the mount, therefore we recommend a
smooth thread protector. GSL manufactures thread protectors that will work in conjunction
with this mount and they are available on our website (gsltechnology.com). Never shoot with
the Fat Man mounted on a 3-Lug without a smooth thread protector installed.
The Fat Man suppressor is a non-user serviceable suppressor. The mount has a copper-
colored anti seize compound applied to the threads on the mount/suppressor body interface.
The Fat Man suppressor is optimized for use with the 9mm subsonic round in mind, however,
rifles chambered in .38Spl or .357Mag can also be used with this suppressor. The sound
signature will be louder with .357Mag loads as they are typically only offered in supersonic
loadings. Some .38Spl loads may be subsonic (such as typically found in 148gr wadcutter
loads) and may be extremely quiet, others may be transonic and the sound of the bullet
breaking the sound barrier will be the largest sound signature with the Fat Man suppressor
installed.
