Rail for SX3 Universal Hunter?

[IAcubbies]

I would like to mount a Bushnell TRS 25 on my Winchester SX3 UH.  The UH already came drilled and tapped, but I'm not sure what type of mount I need?  Anyone know what's compatible?  Assuming I need some type of picatinny rail?  Appreciate the help, thanks! 

[CrustyRusty]

Winchester part number 62501.  Midwest had them in stock last I checked.

[Tail Feathers]

My research last year revealed that is apparently the only one that fits.  I bought mine from Winchester.