HOW DO I KNOW WHAT CALIBER TO ORDER FOR MY FIREARM?Updated a year ago
We are often asked about laser cartridge compatibility. The descriptions below will help you order the laser that fits your firearm.
Pistols
You can find the correct size on your pistol by looking at the barrel or on the side of the frame. The magazine will also have a stamped number indicating the size.

(The stamp can be seen on the barrel of the firearm.)

(Some pistols from manufacturers like Glock will have the marking on the frame. This one indicates it uses a .40 S&W.)
Shotguns
For shotguns, the stamp can usually be found on the barrel for the gauge size. Stamping on the left side of the shotgun is widespread.

Rifles
You can find the stamping on the barrel like you would a shotgun on regular hunting or bolt action rifles. It is often stamped on the left side of the barrel.

AR platform rifles can vary in size, like 223/5.56, .300AAC, and 308. These details are also located on the barrel. The firearm may also have stamped with specs and serial numbers on it.
Please remember that some AR pistols will use a smaller-sized caliber like the 9mm.

Revolvers
Because revolvers are smaller than pistols, the stamp marking for the caliber size can be found on either the barrel or by the handle.

With revolvers, we offer the .38 Special cartridge. If your revolver takes a .357 Magnum, our .38 Special laser cartridge will fit into the cylinder. The .357 Sig will NOT fit into the .357 Magnum cylinder.
We recommend you research your caliber gauge if you need help deciding which laser to order. Our final recommendation would be to go to your gun manufacturer's firearm product page and research specs or visit your local gun store.
If you have any other questions, feel free to contact our support team at [email protected].
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