Metric Size Guide for Suppressors

Hey guys! Below is a little cheat sheet on the different threads for mounting Suppressors. We are totally aware how confusing the whole process of picking the right Pistons, Direct Mounts, Flash Hiders, or Brakes can be for your different weapon platforms. If we missed something, please message us at info@esilencers.com so we can add/correct anything.

  • M=Metric(for example: M13.5×1 LH means that the numbers are metric instead of standard.)
  • LH=Left Hand(for example: M13.5×1 LH means the threads are backwards from the way you normally tighten things. This thread pitch is righty-loosey, lefty-tighty)
  • RH=Right Hand(for example: M16x1RH means the threads tighten like your more than likely accustomed to (righty-tighty).  If no LH or RH is designated, RH is the default.

.22 LR, .22 MAG, .17 HMR
The standard thread for these calibers is 1/2×28.

9mm

  • 1/2×28 is the most common thread for 9mm weapons- for both carbine and pistol.
  • H&K weapons use the M13.5×1 LH thread pitch
  • Sig Sauer weapons use the M13.5x1LH thread pitch

 

.40 S&W

  • 9/16×24 is the most common thread pitch for .40 cal weapons.
  • H&K weapons use the M14.5×1 LH thread pitch

 

.45

  • .578×28 is the most common thread for .45 cal weapons.
  • H&K USP Tactical uses the M16x1 LH thread pitch
  • H&K Mark 23 (Socom) uses the M16x1 RH thread pitch

 

5.56mm (.223)

  • AR-15s use the 1/2×28 thread pitch
  • Steyr Aug uses the M13x1 LH thread pitch
  • H&K weapons use the M15x1 thread pitch
  • Ruger Mini uses 9/16×24 thread pitch

 

7.62mm (.308)

  • 5/8×24 is the most common thread for 7.62mm or .308 weapons
  • Sako TRG uses the M18x1 thread pitch
  • Accuracy International uses the M18x1.5 thread pitch
  • AK-47s use the M14x1LH thread pitch

 

.338LM

  • 5/8×24 is the most common thread for .338LM weapons
  • Sako TRG uses the M18x1 thread pitch
  • Accuracy International uses the M18x1.5 thread pitch
  • Desert Tactical Arms uses the 3/4×24 thread pitch