barrel thread pitches
Threaded Barrel Image

COMMON BARREL THREAD PITCHES FOR SILENCER USE

Firearm barrel thread pitches are a common questions for us.

Hopefully, this good, but incomplete list of thread pitches will help answer your questions. There are obviously some exceptions. Please let us know if you see any errors and if you have any additions.


Important abbreviations:
M = metric (inches are implied when there is no metric abbreviation)
RH = right hand (RH is implied when there is no abbreviation)
LH = left hand

10MM
9/16x24

12GA
M22x.75 RH (Saiga 12)

.22LR/.22MAG/.17HMR
1/2x28
M8x.75RH (Walther P22, Colt Gold Trophy, S&W M&P22 (not compact version)

9MM
1/2x28 
1/2x36 (common on AR rifles, Tavor)
M13.5x1
M13.5x1 LH (Sig, Glock, H&K, B&T)
M18x1 (pre 2016 CZ)
9/16-24 RH (Some HK -94 & MP5)

.40S&W
5/8x24
9/16x24
M13.5x1 LH (Sig)
M14.5x1 LH (HK, Glock)
M16x1 LH (KRISS Vector)

.45ACP
.578x28
M14.5x1 LH (HK)
M16 x1 LH (some HK, Glock)
M16 x1 RH (some HK)

5.56MM/.223/5.45
1/2x28
M15x1 (HK)
M24x1.5 RH (some AK rifles)
9/16x24 (older Ruger Mini-14)
M13x1 LH (Steyr Aug)
​M13x1 RH (Galil)
9/16x24 (pre 2009 Ruger Mini-14)

7.62MM/.308/.300BLK/.300WM/.338
5/8x24 
M14x1 LH (common on AK rifles)
M15x1 (HK)
M24x1.5 RH (other AK rifles)
.595x32 (Springfield M1A SOCOM)
M13x1 RH (Galil)
5/8x24 (newer IWI Galil Ace)
M18x1 (Sako, Tikka)
M18x1.5 (Accuracy International)
3/4x20 (Barret 98B)
3/4-24 (Desert Tactical .338)

.338LM
5/8x24
M18x1.5 RH (Accuracy International)

.350 Legend
1/2x36
1/2x28
11/16x24

.450 Bushmaster
11/16x24 (other variations exist)
5/8x32

.50BMG
1x14 (Armalite, McMillian TAC-50, AR450)
7/8x14 (Barrett, EDM)
3/4x20
3/4x24

6.5 Creedmore
5/8x24



*Accuracy International, SAKO and Desert Tactical Arms utilize non-standard thread pitches. Contact them directly for questions. EU based manufacturers such as Sig Sauer, Glock and HK often utilize metric threads. This list is just a reference and may not be current due to manufacturer changes. Please be sure to contact the manufacturer of your firearm to conform thread pitch. All trademarks respected.


Page last updated 02/08/2024


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