[glenflagger]

I purchased a Tru-Glo front bead system for the new SPR100 Sporting.
The mounting hole for the Tru-Glo needs to be re-drilled or the bead system hangs over the end of the rib by about 1/2 in.
After this modification you should be home free, other than an absolute requirement of red locktite on the mounting screw since the relocation of the mounting hole leaves the mount very prone to movement if not torqued to the max.,
you may want to check the clearance on the Hi-Vis system before you buy!

 

[Bobshouse]

I'd just screw the sight in the regular hole, take a good pair of garden shears and cut off the excess...definately wouldnt drill a new hole for a Tru-glow sight!

 

[glenflagger]

Unfortunately the mount for the fiber optic is at the very ends of the mount so it would be impossible to cut.
I did very carefully drill another mounting hole with no problem and it works fine.