Which Thread Pitch Adapter Should You Use for Your Firearm? A Comprehensive Guide

Introduction: Selecting the right thread pitch adapter is crucial for firearm compatibility and performance. In this guide, we’ll answer common questions about thread pitch adapters and provide a detailed table for easy reference.


Table: Handguns Thread Pitch Adapters

Brand/TypeCaliberThread Pitch
After Market Barrels.221/2×28
9mm1/2×28
.40 SW9/16×24
.45 ACP5/7×28
Beretta9mm1/2×28
BT9mm13.5×1 LHM
CZ9mm1/2×28
FNH9mm1/2×28
.45 ACP5/7×28
Glock9mm13.5×1 LHM
.40 SW14.5×1 LHM
.45 ACP16×1 LHM
HK9mm13.5×1 LHM
.40 SW14.5×1 LHM
.45 ACP16×1 LHM
HK2316×1 RHM
Ruger.221/2×28
Smith & Wesson.221/2×28
9mm1/2×28
.45 ACP5/7×28
Sig Sauer9mm13.5×1 LHM
.45 ACP5/7×28
Sphinx9mm13.5×1 LHM
Styer Arms9mm1/2×28 or 13.5×1 LHM

Table: Pistol Caliber Carbines & Sub Guns Thread Pitch Adapters

BrandCaliberThread Pitch
Angstadt Arms9mm12×36
.40 SW58×24
.45 ACP578×28
CMMG57×2812×28
9mm12×36 or 12×28
.40 SW578×28
.45 ACP578×28
Colt9mm12×36
CZ9mm18×1 (pre-2016) or 12×28
IWI9mm12×36
Kel Tec9mm12×28
.40 SW9/16×24
LWRC.45 ACP578×28
MP5 Variants9mm12×28 or 3 lug
Ruger9mm12×28
Sig Sauer9mm13.5×1 LHM
Quarter Circle 109mm12×28
.40 SW58×24 or 578×28
10mm578×28
.45 ACP578×28

Table: Rifles Thread Pitch Adapters

Brand/TypeCaliberThread Pitch
Common Pitches5.5612×28
.30 cal58×24
Accuracy International58×24
CMMG350 Legend12×28
CZ557 UCS58×24
750 Sniper18×1
Bren S112×28
Desert Tech.30 cal34×24 or 58×24
FNHFN 1512×28
SCAR 1612×28
SCAR 1758×24
SCAR 20S58×24
HKMR556A112×28
MR762A115×1
HK9115×1
IWI5.5612×28
300BLK58×24
Knight Armament CompanySR2534×24
Rock River Arms350 Legend12×36
RugerMini 149/16×24 (pre-2009)
350 Legend12×28
450 Bushmaster11/16×24
Sako.30 cal18×1
TikkaT3x58×24
T3 Compact Tac58×24
T3 Tac18×1
Winchester350 Legend11/16×24

Instruction Manual: Thread Pitch Adapters

  1. Purpose: This manual provides information on the correct thread pitch adapters for various firearms.
  2. How to Use: Identify your firearm’s brand and caliber. Refer to the tables above to find the corresponding thread pitch.
  3. Safety Precautions: Always ensure your firearm is unloaded before making any modifications. Consult with a professional if unsure about the correct adapter.
  4. Maintenance: Regularly check the thread pitch adapter for any signs of wear or damage. Replace if necessary.
  5. Storage: Store the adapters in a cool, dry place away from direct sunlight.
  6. Conclusion: Using the correct thread pitch adapter ensures the optimal performance and safety of your firearm. Always refer to manufacturer guidelines and consult with professionals when in doubt.

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