Bar-Sto Conversion Barrels

These barrels allow you to convert your existing Glock to shoot another caliber. For example:

Your Glock 22 can be converted to shoot 9mm ammunition by simply replacing your existing barrel with this conversion barrel and using a Glock 17, 9mm magazine.

Or, your Glock 20 can be converted to shoot .40 S&W.

Use the drop down menu above to select your existing Glock model, the caliber you'd like to convert to, and the type of barrel you desire—standard, ported, or compensated. Not all guns are available based on the size of the slide.

This is an excellent way to get the most from your Glock handgun and save money on ammo. Make sure to get some new matching magazines to go along with your new caliber barrel.

These barrels are compatible with Gen4 Glocks!

Please note:
Bar-Sto Barrels are precision cut and made to order. Our in-stock availability for these barrels is limited. While we may have certain barrels on-hand we ask that you contact us to verify availability. Barrels not in stock typically ship within 8-14 weeks. Thank you for your patience.


Barrels may only be returned if they are unused and in re-sellable condition. If the item is defective—i.e., does not function—we will accept a return within the 30-day period only.

Not available for export outside the United States.

Order Online or Call Toll-Free: 1-800-601-8273