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Questions & Answers
Which barrel to convert G23 .40 to .357? Expert Answer

We do not currently carry a conversion barrel for the Glock 23 from .40 to 357 Sig. However, we do carry barrels that convert the Glock 23 to 9mm, which can be found by using the link below:
https://www.opticsplanet.com/trybe-defense-non-threaded-conversion-pistol-barrel-for-glock-23-32.html

by Ethan, Gear Expert, August 16, 2022
Any problems converting my G23 40 S & W to this 357 Sig barrel. Expert Answer

This barrel can be used to convert a Gen 3-4 Glock 23 to .357 Sig, you will also need to use Glock 32 .357 magazines.

by Nick B., Gear Expert, October 8, 2021
Customer Reviews
Helpful Positive Review
AlphaWolf Barrel For M/32 357 Sig by Harley08, October 24, 2023
This fits and works perfectly! I now can fire 40cal or .357 Sig from my 40cal Glock
2/2 found this helpful
Helpful Positive Review
Obviously a very high quality replacement barrel. I bought a .357 SIG barrel to replace a .40 S&W factory Gen 3 Glock 23 barrel. Went in with no issues. Operates smoothly. No tuning necessary. Even locks up tighter than the factory barrel which ...
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5/5 found this helpful
Helpful Positive Review
G23/32 build by MacK, October 18, 2018
Bought for a g32 build. Fits great, looks awesome, shoot amazing. I have put over 500+ rounds though it so far and the only problem was the 1 mag of 357 SIG TMJ had issues feeding. After about 10-12 rounds NO MORE ISSUES. I love it and would high rec...
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5/6 found this helpful
Helpful Positive Review
Works in Glock 33 and the 357 Sig needs it. by Jeffrey, February 20, 2020
Works in Glock 33 and the 357 Sig needs it. This gives the Glock 33 a barrel length of the G31. A G31 barrel can not be used in a G33, but the G32 can. It works great. Gives the G33 357 Sig the length it needs to put energy on the bullet instead ...
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4/10 found this helpful
Helpful Positive Review
Awesome barrel by Frank, November 13, 2021
I installed this barrel in my Gen 4 Glock 23, no other changes necessary to convert to a Glock 32. The newer G23 mags work just fine with 357 Sig. Point of impact did change, I have to cover my target with my front sight rather than a 6 o'clock hold....
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6/6 found this helpful
Most Recent Reviews
Exactly what I needed by Dman, Verified Owner, November 14, 2025
Great product you can definitely tell its high quality and well made
Read All 21 Reviews
Color: Black Finish: Salt Bath Nitride Fabric/Material: 416 Stainless Steel Caliber: .357 SIG Gun Make: Glock Gun Model: Glock 23 Model Generation: 1 , 2 , 3 , 4 Barrel Length: 4.02 inBarrel Material: 416 Stainless Steel Flutes: Yes Condition: New Rifling Profile: Button Rifling

Code: 59-BPI-UASG95-32357N

MPN: AW-32357N

UPC: 639737069310

List: $134.95Save 11%
$119.95

Product Info for Lone Wolf Arms AlphaWolf Barrel For M/32 357 Sig

Barrel upgrade kits are a tried and true way to improve your firearm. Lone Wolf Arms is a trusted gunsmith specializing in Glock parts and accessories, including barrels. Customize your pistol with a drop-in Lone Wolf Arms AlphaWolf Barrel for M/32 357 Sig to deliver precise shots on target with every pull of the trigger. These Pistol Barrels by Lone Wolf Arms are constructed with exacting tolerances, meaning these barrels allow for drop-in installation without modification. Also, they are built from 416 stainless steel and are heat treated to RC 40-42, then the premium SBN coating increases the surface hardness to RC 60. Designed for lead, plated, or jacketed ammunition, these Lone Wolf Arms M/32 barrels can handle all calibers, and they are heat treated to RC 60 for remarkable durability. Unlike other barrels, this upgraded barrel has fluting in the design which allows excess heat and debris to escape. Equip a Lone Wolf Arms AlphaWolf Glock Barrel to boost the performance of your firearm.image

Specifications for Lone Wolf Arms AlphaWolf Barrel For M/32 357 Sig:

Manufacturer: Lone Wolf Arms
Color: Black
Finish: Salt Bath Nitride
Fabric/Material: 416 Stainless Steel
Caliber: .357 SIG
Gun Make: Glock
Gun Model: Glock 23
Model Generation: 4, 3, 2, 1
Barrel Length: 4.02 in
Barrel Material: 416 Stainless Steel
Flutes: Yes
Condition: New
Rifling Profile: Button Rifling

Features of Lone Wolf Arms AlphaWolf Barrel For M/32 357 Sig:

  • Fits Gen 1-4 GLOCKs
  • Designed for lead, plated, or jacketed ammunition
  • Certified, stress relieved 416 stainless steel
  • Button rifled, three stage honed bore
  • Industry recognized SBN premium coating (SBN is Salt Bath Nitride, similar to Tennifer)
  • Heat treated to RC 40-42, then SBN coating increases surface hardness to RC 60
  • Exacting tolerances allow for drop in installation
  • Fluting creates path for heat and debris to escape

Package Contents:

  • Lone Wolf Arms AlphaWolf Barrel For M/32 357 Sig

Lone Wolf Arms AlphaWolf Barrel For M/32 357 Sig Orderable Models

List of Orderable Models

  • Lone Wolf Arms AlphaWolf Barrel For M/32 357 Sig, Stock Length, Black, AW-32357N , MPN: AW-32357N , UPC: 639737069310 , Code: 59-BPI-UASG95-32357N
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