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  • Double Diamond 9mm Premium Conversion Barrels

Double Diamond 9mm Premium Conversion Barrels

$169.99 to $279.95
SKU: 1012
Easily convert your Glock 22/23/31/32 to fire 9mm with just a simple drop-in barrel swap!

Double Diamond Premium Barrels are manufactured in the USA and are designed to deliver better accuracy reliability, and so much more.
Are you looking for better accuracy and higher velocity? Of course you are! Our Double Diamond Premium Barrels are manufactured in the USA and are designed to deliver all that and much more.

Each Double Diamond Precision Barrel is subjected to strict quality control processes to insure quality and reliability.

  • Made in the USA by men who shoot, understand and appreciate firearms
  • Will handle lead, jacketed or plated ammunition
  • Aggressive and attractive crown - looks great, shoots better
  • Mirror polished improved feed ramp insures reliability
  • Mirror polished chamber and bore increases velocities and improves accuracy
  • Precision machined from heat treated, certified, stress-relieved 416R stainless steel
  • Fully supported, polished chamber is reload friendly
  • Tighter fit than factory spec dimensions
  • Match Grade broach cut rifling and deep target crown
  • Fits Glocks Gen 1-4 (will not fit Gen 5)

Factory warranty will replace any barrels or barrel accessories which are found to have manufacturing or material defects. Customer modifications or the use of reloaded ammunition will void this warranty.

Please note:
In-stock availability of our GSPC barrels may be limited. If your order is time sensitive, we recommend contacting us to verify quantities.

Not available for export outside the United States.

Barrels may only be returned if they are unused and in resellable condition. If the item is defective, ie, does not function, we will accept a return within the 30 day period only.

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

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A # 1 Product


Retired with a Gen 3 Model 32 .357 sig. service weapon. It killed on both ends, ordered the Double Diamond 9mm conversion barrel and dropped it down to a 9mm.

Gun works flawlessly and the teeth have been pulled from that old .357 sig monster not to mention the 9mm ammo is dirt cheap.

Great perfect drop in fit.


Had one worked flawlessly until the she devil ex sold it. Ordered another. This barrel is drop in perfect transforms my model 22 40 cal to a model 17 9mm without any other changes. Great accuracy. Or I wouldn't be getting an other .

Great barrel


Very nice conversion barrel. Works flawlessly and gives the gun a new look.