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Questions & Answers
When changing gen2 G17 to .357sig which barrel is correct please? Expert Answer

Please email us at techsales@opticsplanet.com so we can further answer your question.

by Ben, Gear Expert, October 15, 2021
What mag do I use? For my G22 and will 357sig fit in a G22 .40 calmag Expert Answer

Please email us at techsales@opticsplanet.com regarding your question.

by Hunter, Gear Expert, January 11, 2023
Customer Reviews
Helpful Positive Review
Awesome barrel by Alex M, Verified Owner, June 14, 2024
Bought this for my Glock 22 Gen 3. I already have the Alpha Wolf 9mm conversion barrel, so I knew what to expect. The fit and finish is fantastic. Oiled it up a bit and ran a bore snake through it before shooting it for the first time just for good m...
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1/1 found this helpful
Most Recent Reviews
Great conversion or replacement barrel. by CDKJudoka, Verified Owner, October 24, 2025
I bought this as a conversion barrel for my Gen4 G22 since the G31 is getting next to impossible to find. The AlphaWolf dropped right in and ran like a top. No failure to feed or eject with WWB 125gr or Federal HST 125gr. I recommend this for anyone ...
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Most Recent Reviews
Lonewolf .357 SIg barrel by dgr, October 17, 2025
Other than having to spend over an hour cleaning the bore, pretty happy with this. Apparently, this was a return with quite a few rounds run through it. I looked down the bore and could not believe what I was seeing. No witness marks on the barrel,...
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Most Recent Reviews
Good quality by ps, Verified Owner, October 15, 2025
Haven't shot with this barrel yet but I have several barrels from Lone Wolf Arms and they have all been flawless so far.
Most Recent Reviews
Glock 31 357 sig barrel by Buffy, Verified Owner, May 20, 2024
Used it in my Glock 22. Works just fine! Gives me two calibers one pistol. Have a 9mm on backorder too
Most Recent Reviews
extra barrel by libras322, Verified Owner, November 29, 2023
Haven't had a chance to function test this barrel yet but I have no doubt that it will be as good as any other i have gotten and used. I have a 9mm none threaded 9mm threaded 9mm ported 40 s&w a 45acp and 10mm all work fine with good accuracy. The 9...
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Read All 7 Reviews
Color: Black Finish: Salt Bath Nitride Fabric/Material: 416 Stainless Steel Caliber: .357 SIG Gun Make: Glock Gun Model: Glock 31 Model Generation: 1 , 2 , 3 , 4 Barrel Length: 4.49 inBarrel Material: 416 Stainless Steel Flutes: Yes Condition: New Rifling Profile: Button Rifling

Code: 59-BPI-UASG92-31357N

MPN: AW-31357N

UPC: 639737069235

List: $134.95Save 11%
$119.95

Product Info for Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel

Quality aftermarket barrels are hard to come by, but you can ensure that you're getting the most reliable Glock performance possible when you install a Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel. These Pistol Barrels by Lone Wolf Arms are constructed from 416 stainless steel for durability and resistance to corrosive elements and abrasion. However, the stippled barrel surface and three-stage honed bore prevents the barrel from becoming too polished, and the extra care taken with the manufacturing process ensures that you get a long-lasting and reliable service life. Plus, the Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel has the industry-recognized Salt Bath Nitride (SBN) coating that increases surface hardness to RC 60, which helps prevent surface scratches, dents, and corrosion. Reliable lockup and superior performance are just a few of the many features that the Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Pistol Barrel brings to the table.image

Specifications for Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel:

Manufacturer: Lone Wolf Arms
Color: Black
Finish: Salt Bath Nitride
Fabric/Material: 416 Stainless Steel
Caliber: .357 SIG
Gun Make: Glock
Gun Model: Glock 31
Model Generation: 4, 3, 2, 1
Barrel Length: 4.49 in
Barrel Material: 416 Stainless Steel
Flutes: Yes
Condition: New
Rifling Profile: Button Rifling

Features of Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel:

  • Fits Glock generations 1-4
  • 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 Glock 31 .357 SIG Barrel

Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel Orderable Models

List of Orderable Models

  • Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel, Stock Length, Black, AW-31357N , MPN: AW-31357N , UPC: 639737069235 , Code: 59-BPI-UASG92-31357N

Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Lone Wolf Arms AlphaWolf Glock 31 .357 SIG Barrel, Stock Length, Black, AW-31357N , MPN: AW-31357N-DEMO , Code: 59-BPI-UASG92-31357N-DEMO
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