These are the correct sight sets for a SIG P239:
SIG P239 (9mm, .357 SIG and .40 S&W) #8 front/#8 rear
TFX Pro® | TG13SG1PC | Orange FOCUS⋅LOCK™ Front sight, u-notch rear, angled rear for emergency one-hand slide operation. |
TFX® | TG13SG1A | White FOCUS⋅LOCK™ Front sight, square-notch rear. |
Tritium Pro | TG23S1W | White FOCUS⋅LOCK™ Front sight, u-notch rear, angled rear for emergency one-hand slide operation. |
TFO® | TG131ST1 | Green front sight, green rear square-notch rear. |
TFO® Yellow | TG131ST1Y | Green front sight, yellow rear square-notch rear. |
Tritium Only | TG231S1 | Green front sight, green rear square-notch rear. |
Fiber-Optic Only | TG131S1 | Red front sight, green rear square-notch rear |
We can also advise to match up the numbers indicated on your factory front and rear sights, with the corresponding TRUGLO sight sets. as there can be some variance in certain firearms from the information indicated above.
Please be advised, certain SIG pistols (within a given model range) can also have a variety of front sight slide relief cuts which might interfere with the installation of the front sight.
TRUGLO recommends to ONLY have these sights installed by a professional pistolsmith with appropriate sight installation tools.