I want to start personalising my .223 Stevens 200.

It is very accurate ( five shots into an inch at 100 yards off a bipod ) so I don't need a new barrel. I have installed a Rifle Basix trigger.

I need a better target/tactical stock with inbuilt 'cradle' than the current Tupperware stock. I'm getting confused with the options.
I have a blind, staggered feed magazine and the action screws are 4.4" apart.

What will bolt straight up ? If any ?

PS. To demonstrate how much faith I have in the accuracy potential of this rifle I have ordered a A$2,600 March tactical scope for this rifle. Yes, it is that good.