TRUGLO does not make a front/rear TFO sight set for this model SIG pistol.
The SIG P238 and SIG P938 TFO front sight you may have seen, is not available as a replacement, or accessory part, from TRUGLO. This sight is sold exclusively to SIG as an OEM part for their P238 and P938 pistols and is designed for use with the SIG factory tritium only rear sigtht. SIG has also recently introduced a new set of sights for these pistols under the SIG X-Ray series.
https://www.sigsauer.com/store/x-ray3.html
We recommend you contact SIG for availability of this sight.