Suppressor Threads

[Tuukka]

Hi,

Muzzle diameter is more critical than calibre itself, ie. the muzzle has to be thick enough to leave a proper shoulder behind the thread.

If the shoulder is not enough, mounting and removing the suppressor over time may damage/shape the shoulder and your accuracy/zero will suffer.

Here is our simple guide to recommended threads:

| Ase Utra

Basically most bolt action rifles could be covered with the three metric thread examples, thinner than 15.5 mm then with for example 1/2x20 or 1/2"x28 UNEF.

The PDF file in the link then shows our tolerances for the two main metric thread types on suppressors, Sako or no spigot type and the spigot type thread.

Why we call the no spigot thread the Sako thread is that we worked together with Sako on introducing their factory threads, as other manufacturers use them also we may switch the designation to just no spigot.

As mentioned, several European rifle manufacturers use one or several of the mentioned threads, U.S. manufacturers usually then of course relying on imperial ( 5/8"x24 UNEF for example is very common )


Best Regards!

Tuukka Jokinen
Ase Utra sound suppressors