Really not much that ive seen. but Boyds makes some pretty neat stocks for them. Replacement stocks for the Savage Actions
Scope....one that won't break the bank...no red dot.
I can live with the trigger.
Do I need rails for a bipod?
What caliber is it? Does it have the Accu-trigger?
Had a Mark II in .17 HM2. Skinny little gun shot like a laser!
I'm shooting two HMRs with Mueller APVs. Good scope and won't break the bank. $130 at SWFA. 4.5-14X40. Objective adjustable down to 10 yards. Whatever you end up with, you will want an adjustable objective or you won't be able to focus it at 50 yards or less on full power.
Boyds makes good stocks. You need a front sling stud to mount a bipod and some Boyds stocks may not come with the stud.