MK12 Mod0 sight help

[cb1000h]

Need some help on rear flip up Before I shell out the money for PRI or Arms sight I just wanted to make sure that they will fit in that space. Only one slot left on the uppers rail and the MK12 rail is as far forward as can be
Or if anyone as a sight they like that will fit
Thanks
Wayne

 

[Tengo1]

Yes. The ARMS rear #40 sight is designed to slip into that last slot behind the swan sleeve.

 

[FMJBT]

KAC 600m sight will fit in there too.