Since your stock is very plain it's going to be that way when finished; so I would concentrate on color for the stain. Not on guns but other projects using Red Maple and Sugar Maple, I've used a TransTint die. On maple, sometimes a die, instead of a stain, will reduce the blotchiness. The die comes concentrated, so you can dilute it with water to achieve the color you want. On figured wood I've also used it fairly concentrated, rubbed back, then a LMF stain applied on top.