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.

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

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 

LWRC 45 ACP – .578×28 

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

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 

CMMG 350 Legend – 1/2×28 CZ 557 UCS – 5/8×24 750 Sniper –  18×1  Bren S1 – 1/2×28 

Desert Tech .30 cal –  3/4×24  or 5/8×24 

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 –  18×1  HK91 –  15×1  

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

Knight Armament Company SR25 –  3/4×24  

Rock River Arms 350 Legend – 1/2×36 

Ruger Mini 14 –  9/16×24  (pre 2009) 350 Legend – 1/2×28 450 Bushmaster –  11/16×24  (Fixed Mount for the Obsidian45) 

Sako .30 cal –  18×1  

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

Winchester 350 Legend – 11/16×24 * The  SCAR17 R3 Flash Hider  is designed to seat on the muzzle of the barrel as opposed to the barrel’s shoulder.

New to suppressors? Our Resources Page has you covered with more helpful guides and FAQ.