Thread Pitch Guide

This guide is designed to quickly reference what thread pitches your firearms have. If you need more clarification on what attachments you need for that firearm, check out our Pistol Suppressor Attachments Guide.

Click on of the links below to jump to that specific firearm type:
Handgun Thread Pitches
Pistol Caliber Carbine / Subgun Thread Pitches
Rifle Thread Pitches

We recommend double checking your thread pitch with the original manufacturer of your barrel/firearm before making any purchases.

Handguns

After Market Barrels (most common)
.22 – 1/2×28
9mm – 1/2×28
.40 S&W – 9/16×24
45 ACP – .578×28

Beretta
9mm – 1/2×28

B&T
9mm – 13.5×1 LHM

CZ
9mm – 1/2×28

FNH
9mm – 1/2×28
45 ACP – .578×28

Glock
9mm – 13.5×1 LHM
.40 S&W – 14.5×1 LHM
45 ACP – 16×1 LHM

H&K
9mm – 13.5×1 LHM
.40 S&W – 14.5×1 LHM
45 ACP – 16×1 LHM (HK23 – 16×1 RHM)

Ruger
.22 – 1/2×28

Smith & Wesson
.22 – 1/2×28
9mm – 1/2×28
45 ACP – .578×28

Sig Sauer
9mm – 13.5×1 LHM
45 ACP – .578×28

Sphinx
9mm – 13.5×1 LHM

Styer Arms
9mm – 1/2×28 or 13.5xl LHM

Pistol Caliber Carbines / Sub Guns

Angstadt Arms
9mm – 1/2×36
.40 S&W – 5/8×24
45 ACP – .578×28

CMMG
5.7×28 – 1/2×28
9mm – 1/2×36 or 1/28×28
.40 S&W – .578×28
45 ACP – .578×28

Colt
9mm – 1/2×36

CZ
9mm – 18×1 (pre 2016)
9mm – 1/2×28

IWI
9mm – 1/2×36

Kel Tec
9mm – 1/2×28
.40 S&W – 9/16×24

MP5 Variants
9mm – 1/2×28 or 3 Lug

Ruger
9mm – 1/2×28

Sig Sauer
9mm – 13.5×1 LHM

Quarter Circle 10
9mm – 1/2×28
.40 S&W – 5/8×24 or .578×28
10mm – .578×28
45 ACP – .578×28

Rifles

Common thread pitches per caliber
5.56 – 1/2×28
.30 cal – 5/8×24

Common thread pitches for AR variants
5.56 – 1/2×28
300BLK – 5/8×24
.30 cal – 5/8×24

Accuracy International
.30 – 18×1.5M or 5/8×24

CZ
557 UCS – 5/8×24
750 Sniper – 18×1
Bren S1 – 1/2×28

Desert Tech
.30 cal – 3/4×24

FNH
FN 15 – 1/2×28
SCAR 16 – 1/2×28
SCAR 17 – 5/8×24* SCAR17 R3 Flash Hider
SCAR 20S – 5/8×24* SCAR17 R3 Flash Hider

H&K
MR556A1 – 1/2×28
MR762A1 – 15×1
HK91 – 15×1

IWI
5.56 – 1/2×28
300BLK – 5/8×24* SCAR17 R3 Flash Hider

Ruger
Mini 14 – 9/16×24 (pre 2009)
450 Bushmaster – 11/16×24

Sako
.30 cal – 18×1

Tikka
T3x – 5/8×24
T3 Compact Tac – 5/8×24
T3 TAC – 18×1

* The SCAR17 R3 Flash Hider is designed to seat on the muzzle of the barrel as apposed to the barrel’s shoulder.