you could try adding one of these and shaping it the way you like. If it didn't turn out the way you want you are only out a few bucks and not a whole stock.
http://www.brownells.com/.aspx/pid=2...Y_FOREND_BLOCK
or
http://www.midwayusa.com/viewProduct...tNumber=395080
May not be your thing, but it is an option if you do like it.
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