Call Today: +1.2814514175

Sean Cody

Contact Information

If you are interested in a NFA Trust and how you can legally purchase NFA regulated items, call me or email me and i will be happy to tailor a trust for your specific needs.

Telephone:  281.451.4175
FAX:  713.513.5918
Postal address:  801 Congress, Suite 350, Houston, TX  77002
Electronic mail
General Information: TexasTrustLawyer@TexasNFATrust.com
Consult with Attorney Sean Cody for NFA trust: SeanCody@HoustonAttorney.org 

Texas NFA Gun Trust in Houston and Across the State of Texas!!

Threading abbreviations pertaining to Rifles and Silencers:

Common Handgun Terms:  

LH- Left Hand (as an example – M13.5×1 LH This is backwards from standard thread patterns . . i.e. righty-loosey, lefty-tighty…)

RH- Right Hand (example – M16x1RH The threads work in the typical American manner.  i.e.  righty-tight.  


If there is no LH or RH designation – RH is the default.

M- Metric (M13.5×1 LH means that the numbers are metric instead of standard.)

TPI – Threads per inch

Common Calibers.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 – 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 ACP
.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


9mm

1/2×28 is the most common thread for 9mm weapons  – 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 pitch7.62mm (.308)
5/8×24 is the most common thread for 7.62mm/.308 weapons
Sako TRG uses the M18x1 thread pitch
Accuracy International uses the M18x1.5 thread pitch
AK-47s use the M14x1LH thread pitch

7.62mm (.308)

5/8×24 is the most common thread for 7.62mm/.308 weapons

9/16x24 for hunting profile barrels.
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

.50 BMG
1” X 14 tpi – McMillian TAC-50, Armalite AR50
7/8″ x 14 tpi – All Barretts & EDM

Barrel Threading Common Questions.