Fast Fire III

[Zarkohl]

Does the Fast Fire III with the speedbead mount fit a SP10 or do you need to use a saddle type mount?

[Old Gobbler]

Burris doesn't make a sp10 mount for the spread bead - you will have to get a mount

[Zarkohl]

What type of mount? Do the type of rails matter?

[M R Ducks]

AIMTECH and B-SQUARE are the only ones I know of and both are discontinued.  You can try Numrich and see if the have any.  They pop up on here an eBay on occasion.

[Old Gobbler]

You can get the receiver tapped for a weaver rail - any competent gunsmith can perform the job

[arkrem870]

I'd get receiver drilled and tapped. You can't trust a speed bead