Accessories for SIG SG 550/551


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