Yes a XS front sight is available for the DX sight for use on the 325 tr. I have one and it has been GREAT. I use the standard dot .275 tall
PN 10-2180P-275-4
Thanks for the information guys! I had thought the 325's sight was pinned in, but on inspection last evening I saw that this is not the case. I was looking at the XS sight, so I really appreciate first hand reports. Thanks again.
Just remember that the NightGuard rear sight has a U shaped cutout, to accomodate the XS dot. Your TR 325 might have a standard square notch, which might obscure the lower part of the dot.