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Thread Pitch Adapter Guide

American Standard Threads

BARREL THREAD APPLICATION CALIBRE TYPE
3/8-24 RH Kel-Tec PMR-30 .22 Calibre Pistol
1/2-20 RH Tec 22 .22 Calibre Pistol
CZ-452/455 .22 / 17 HMR Rifle
1/2-28 RH AR-15, M-16, AR-180 .223 / 5.56 Rifle
Most Threaded .223 / 5.56 Rifle
Most Threaded .22's Rifle / Pistol
Most Threaded 9mm Pistol
Ruger 10/22 Tactical .22 Calibre Rifle
Newer Mini 14 .223 / 5.56 Rifle
MPA57 5.7x28 MM Submachine Pistol
MPA "Mini" 9MM Submachine Pistol
1/2-36 RH AR-15, M-16, AR-180 9mm Rifle
9/16-24 LH FN FAL .308 Calibre Rifle
9/16-24 RH Most Threaded .40 Pistol
AR Grendal 6.50 Rifle
Older Mini 14 .223 / 5.56 Rifle
L1-A1 .308 Calibre Rifle
Glock 20 10 mm Pistol
H&K 94 9x19mm Rifle
MP5 9mm Submachine Pistol
.578x28 RH Most Threaded .45 Calibre Pistol
Threaded 1911 .45 Calibre Pistol
5/8 x 11 RH M11/M12 .380 Calibre Submachine Pistol
5/8-24 RH Most Threaded .308 Rifle
Many Threaded .30 Rifle
UZI Carbine/ SMG 9mm Rifle
Ruger Mini 30 .30 Calibre Rifle
AR-10 / M14 .308 Calibre Rifle
300 Blackout .300 Calibre Rifle
AR-10 7.62x39 Rifle
11/16x16 RH MPA .45 Calibre Rifles
11/16x24 RH .450 Bushmaster Rifle
Alternative .308 Threading Rifle
Alternative bull barrel Threading Rifle
3/4-10 RH M10 / M11 9mm Submachine Pistol
3/4-24 RH Desert Arms Tactical Rifles
7/8" x 9 RH MPA10 .45 Calibre Submachine Pistol
7/8" x 14 RH All Barretts & EDM .50 BMG Rifle
1" x 14 RH AR450 .50 BMG Rifle
McMillian TAC-50 .50 BGM Rifle

Metric Threads

BARREL THREAD

APPLICATION CALIBRE TYPE
M8 x .75 RH Walter p22
M&P 22
Colt/Umarex 1911 A1
Colt Gold Trophy
.22 Calibre Pistol
13mm x 1 LH Steyr Aug .223 /5.56 Rifle
13mm x 1 RH Galil .223 / 5.56 Rifle
Galil .308 / 7.62 Rifle
Older Glock 26 9x19mm Pistol
13.5mm x 1 LH Sig P228/P229/P239 9mm Pistol
14mm x 1 LH AK-47 7.62x39 Rifle
AKM 7.62x39 Rifle
14mm x 1 RH VZ58 7.62x39 Rifle
Yugo SKS 7.62x39 Rifle
15mm x 1 RH H&K 91 / G3 7.62x39 Rifle
H&K 93 / 33 / G-53 5.56 Rifle
16mm x 1 LH Threaded H&K .45 Barrels Pistol
16mm x 1 RH H&K Mark 23 (Socom) .45 calibre Pistol
17mm x 1 RH MAS 1949-56 .308 Calibre Rifle
18mm x 1 RH Sako TRG .338 Calibre Rifle
18mm x 1.5 RH Accuracy International .338 Calibre Rifle
22mm x.75 RH Saiga 12 Gauage Shotgun
24mm x 1.5 RH AK-74 7.62x39, 7.62x54
5.45x39
5.56x45
Rifle
26mm x 1.5 LH PAP M92 / M85 7.62x39 Pistol

Handguns

After Market Barrels (most common)

.22 – 1/2Γ—28

9mm – 1/2Γ—28

.40 S&W – 9/16Γ—24

45 ACP – .578Γ—28

Β 

Beretta

9mm – 1/2Γ—28

Β 

B&T

9mm – 13.5Γ—1 LHM

Β 

CZ

9mm – 1/2Γ—28

Β 

FNH

9mm – 1/2Γ—28

45 ACP – .578Γ—28

Β 

Glock

9mm – 13.5Γ—1 LHM

.40 S&W – 14.5Γ—1 LHM

45 ACP – 16Γ—1 LHM

Β 

H&K

9mm – 13.5Γ—1 LHM

.40 S&W – 14.5Γ—1 LHM

45 ACP – 16Γ—1 LHM (HK23 – 16Γ—1 RHM)

Β 

Ruger

.22 – 1/2Γ—28

Β 

Smith & Wesson

.22 – 1/2Γ—28

9mm – 1/2Γ—28

45 ACP – .578Γ—28

Β 

Sig Sauer

9mm – 13.5Γ—1 LHM

45 ACP – .578Γ—28

Β 

Sphinx

9mm – 13.5Γ—1 LHM

Β 

Styer Arms

9mm – 1/2Γ—28 or 13.5xl LHM

Pistol Caliber Carbines / Sub Guns

Angstadt Arms

9mm – 1/2Γ—36

.40 S&W – 5/8Γ—24

45 ACP – .578Γ—28

Β 

CMMG

5.7Γ—28 – 1/2Γ—28

9mm – 1/2Γ—36 or 1/28Γ—28

.40 S&W – .578Γ—28

45 ACP – .578Γ—28

Β 

Colt

9mm – 1/2Γ—36

Β 

CZ

9mm – 18Γ—1 (pre 2016)

9mm – 1/2Γ—28

Β 

IWI

9mm – 1/2Γ—36

Β 

Kel Tec

9mm – 1/2Γ—28

.40 S&W – 9/16Γ—24

LWRC

45 ACP – .578Γ—28

Β 

MP5 Variants

9mm – 1/2Γ—28 or 3 Lug

Β 

Ruger

9mm – 1/2Γ—28

Β 

Sig Sauer

9mm – 13.5Γ—1 LHM

Β 

Quarter Circle 10

9mm – 1/2Γ—28

.40 S&W – 5/8Γ—24 or .578Γ—28

10mm – .578Γ—28

45 ACP – .578Γ—28

Rifles

Common thread pitches per caliber

5.56 – 1/2Γ—28

.30 cal – 5/8Γ—24

Β 

Common thread pitches for AR variants

5.56 – 1/2Γ—28

300BLK – 5/8Γ—24

.30 cal – 5/8Γ—24

Β 

Accuracy International

5/8Γ—24

CMMG

350 Legend – 1/2Γ—28

Β 

CZ

557 UCS – 5/8Γ—24

750 Sniper – 18x1

Bren S1 – 1/2Γ—28

Β 

Desert Tech

.30 cal – 3/4x24 or 5/8Γ—24

Β 

FNH

FN 15 – 1/2Γ—28

SCAR 16 – 1/2Γ—28

SCAR 17 – 5/8Γ—24*

SCAR 20S – 5/8Γ—24*Β 

Β 

H&K

MR556A1 – 1/2Γ—28

MR762A1 – 15x1

HK91 – 15x1

Β 

IWI

5.56 – 1/2Γ—28

300BLK – 5/8Γ—24*Β 

Β 

Knight Armament Company

SR25 – 3/4x24

Rock River Arms

350 Legend – 1/2Γ—36

Β 

Ruger

Mini 14 – 9/16x24(pre 2009)

350 Legend – 1/2Γ—28

450 Bushmaster – 11/16x24Β (Fixed Mount for the Obsidian45)

Β 

Sako

.30 cal –18x1

Β 

Tikka

T3x – 5/8Γ—24

T3 Compact Tac – 5/8Γ—24

T3 TAC – 18x1

Winchester

350 Legend – 11/16Γ—24