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The suppressor for my
SG 550 was custom built by
BR-Tuote
Ky in
Finland.
It utilizes the
internal threads in the flash hider that is intended for a blank
firing adapter.
The
drawings posted below is the measurements taken off my rifle that the suppressor
was built by.
This blank firing
adapter screws into the internal threads of the flash hider. It
will fit both the SG 550 and the SG 551
The thread size is
M16x1.5 RH
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