FREQUENTLY ASKED QUESTIONS

Ship the cylinder and extractor to our shop with a note that includes your order number. Many customers simply print their order confirmation email and include it in the package.

No. Send the cylinder and extractor only. If the yoke cannot be removed, it may remain attached.

TK Custom
503 N Church St
Thomasboro, IL 61878

UPS is recommended for both incoming shipments and return shipments.

You will receive an update once the work is completed and your return shipping label has been created. At that time you will receive an email with tracking information. If we need additional information during the process, we will contact you before that point.

We recommend monitoring your shipment using the carrier tracking number. If you would like confirmation after it arrives, feel free to contact us by email.

Most Smith & Wesson revolvers originally chambered in .38 Special or .357 Magnum can be converted to 9mm. If you are unsure whether your revolver qualifies, feel free to contact us.

Yes. Titanium cylinders and older recessed charge‑hole cylinders cannot be converted.

Yes. 9mm cartridges require moon clips for proper headspacing and extraction in revolvers.

Yes. .38 Special and .357 Magnum can still be fired one round at a time without moon clips. They can also be fired with moon clips, although the clips used for 9mm and .38/.357 will be different.

Typical accuracy is around a 3‑inch group at 25 yards. For tighter groups, many reloaders use .357‑diameter projectiles in their handloads.

High‑pressure 9mm ammunition is not recommended because it can cause extraction issues.

Moon clips are specific to both the revolver model and the caliber being used. The correct clip depends on the revolver and the ammunition you plan to use.

Extractor groove dimensions vary between ammunition manufacturers. These variations affect how tightly the moon clip holds the cartridge cases. This variation is most noticeable with .38/.357 ammunition.

Standard clips are designed around Federal brass and fit the widest range of ammunition. Starline clips are slightly tighter, while Hornady clips are slightly looser.

Slit moon clips allow cartridges to be loaded by hand without special loading tools. They are convenient for some users but are easier to bend than solid clips. They are only available for certain revolver models.

A moonclip holds multiple cartridges together for faster reloading in revolvers.

They are model-specific — check your revolver brand and caliber before ordering.

We ship moonclips across the United States with fast and reliable delivery only. Currently we do not ship international orders.

No. Moon clips are manufactured to fit specific revolver models and calibers. Always choose a clip designed for your firearm for the best performance.

Yes. Moon clips keep cartridges together, allowing for rapid cylinder loading and simultaneous extraction, which significantly speeds up reloads—especially in competitive shooting.

Yes. Quality moon clips, especially those made from durable steel, can be reused multiple times. Proper care and storage help extend their lifespan.

Yes. Moon clips are widely used in competitive shooting sports such as USPSA, IDPA, and ICORE for their speed and efficiency.

Our extended cylinder releases are designed to fit most modern Smith & Wesson revolvers, although compatibility may vary depending on the specific model and production variation.

Holster compatibility depends on the holster design. Some holsters may require modification when using extended controls or accessories.

No. We do not offer Colt revolver parts or perform cylinder work on Colt revolvers.

Remove the factory strain screw from the front of the grip frame and install the adjustable strain screw in its place. Once installed, adjust tension using the internal set screw to control the pressure applied to the mainspring.

Increase mainspring tension by tightening the set screw slightly. Make small adjustments and test fire until ignition becomes consistent.

Navigate to the Services tab on our website, find the service you want to purchase, add it to your cart, and complete the checkout process.

No. Any additional items purchased with labor will ship back with your cylinder or firearm once the work is completed.

No. The cost of labor does not count toward the free shipping threshold.

Please use the contact form located at the top of our website or visit:

Our phone hours are from 1:00 PM – 5:00 PM CST. We may not always be available during that time. The best way to reach us is through the contact form or by emailing info@tkcustom.com. If you need to speak by phone and cannot reach us, please email us to schedule a phone appointment.