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  • Double Diamond .45ACP to 10mm Conversion Barrels for Glock

Double Diamond .45ACP to 10mm Conversion Barrels for Glock

$149.99 to $209.99
(5 Reviews)
SKU: 1228

One Glock, Two Calibers!
Easily convert your .45 Caliber Glock to shoot 10mm in seconds!

Designed to allow shooters to change calibers by simply dropping in the Double Diamond conversion barrels in conjunction with the appropriate caliber magazine. The barrel is cut to fit in the ejection port of the intended slide. Basically, it's a .45 caliber barrel on the outside chambered in 10mm ... brilliant!

Swapping out recoil guide rods, ejectors, extractors, or strikers is not necessary.

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.

Fits Gen1-4 models.

The "30/30SF" option will NOT fit the G30S.

Twist rate for the Rifling in all Double Diamond barrels:

9mm - 1/10" Right Hand

10mm/.40 - 1/16" Right Hand

.45 ACP - 1/16" Left Hand

Not available for export outside the United States.

Want to convert your 10mm to .40S&W?
Click here!

Need to switch your .40S&W to 9mm?
Click here!

Convert your .45 caliber to shoot 10mm in seconds by replacing the factory barrel with our high performance Double Diamond conversion barrel.

Double Diamond match grade replacement barrels are manufactured in the USA from the highest grade 416R stainless steel forgings. CNC machined and heat treated, providing a life time of service and better-than-factory accuracy at an affordable price.

The standard groove and land rifling make this an excellent choice for those who wish to shoot lead, plated, or jacketed bullets. Can be used in "C" model (compensated) Glocks, in addition to standard Glocks.

Special features include:
• Ready to use, pre-fit, drop-in
• No gunsmithing required.
• Precision machined from heat treated 416R stainless forgings
• Oversized lock-up area produces greater shot-to-shot accuracy
• Tighter than factory spec dimensions
• Polished feed ramp, bore and chamber
• Match grade, broach cut rifling and target crown
• Compatible with all Glock generations
• Maximum chamber support
• Improved feed ramp design
• Diamond turned exterior
• Okay to use lead, plated or jacketed bullets

Match grade broach cut rifling and target crown. Okay to use lead, plated, or jacketed bullets. GlockStore will replace any of its 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.

Fits Gen1-4 models.

The "30/30SF" option will NOT fit the G30S.

Not available for export outside the United States.

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

5 reviews

5 stars
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Functions as advertised.

by

Works well in my Glock 41 with the original extractor. I am too old to dare to compare accuracy between different Glock barrels, but this one is fine.

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Initial issues turn into a successful result.

by

I appreciate the date counter on Glockstore's website. It sets the bar for literally every other online businesses. I had a little difficulty getting me order but the helpful customer service was excellent at getting me squared away. The barrel itself appeared to be manufactured like the other barrels that used to be on the market. A little to tight of tolerances created initial feeding issues. I did some research and discovered that Glock 29 barrels have a shallower angle on the feed ramp that extends slightly into the chamber. There's also much more of a bevel around the chamber entrance on the oem barrel than the double diamond barrel. So I took a risk and little by little milled the chamber entrance and feed ramp. Now I have no feed issues and a successfully converted Glock 30 10mm. I HIGHLY recommend getting a Tungsten 23lb recoil spring cause the recoil from 10mm kinda sucks on a mini Glock.

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Gen 4 G21 swap to 10mm.

by

Drop in fit for my G 21 Gen 4. Only other thing I had to buy are G20 magazines and I was ready to shoot. No other parts had to be changed. No issues with function. Accuracy was at least as good as it was with 45 ACP barrel. I believe it shot more accurate, but I haven’t compared targets as of yet. Main issue I was concerned with was function and recoil. Standard recoil spring seemed to be sufficient with the different ammunition I tried. I ordered and waited for back order to arrive. It was about a 3 week wait until the barrel was in my mailbox. Barrel appeared to be very high quality. Very happy with my purchase.

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PERFECT

by

Outstanding quality with perfect fit and finish. Drops in and works great. I did not have to change the extractor or recoil spring (the 30 and 29 use the same spring rating), with only a G29 magazine necessary. Outstanding customer service with lighting fast shipping and great communication.

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So far so good

by

Dropped into my G21 slide no problem. I’ve only put 100 rounds through it so far but had zero feeding issues.

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