If there is any evidence of figure or curliness in your stock,I suggest looking to the old muzzle loader techniques for finishing your maple stock.Visit Track of the Wolf.
A product I have used with success is Maple Magic.I do not know if it is still available.I think an old formula,or method,is Auqua Fortis
When the stock is pretty well sanded out,the solution is swabbed on,then the wood is heated .A good heat gun will do fine.The wood will toast ,with the chemical,to a dark cinnamon brown.
The trick is,if there is figure,some is more end grain,and some is side grain.The stain penetrates deeper into the end grain than the side grain.
So,now you sand again.The more end grain areas stay dark,the side grain areas become light,and you get (if you have figure) that great fiddleback contrast.
I have also found Feiblings leather dyes to be great for toning,Look to some of the medium browns.,or aark brown/sand/medium gold
I suggest,go buy some scrap maple similar to your stock wood and experiment.Your first tries will lead to what you like.
Maple can work up to be really beautiful.
