hi everyone, i got a blue line shotgun from bullseye,looks like a 870 a little bit harder to pump but for the price you cant go wrong,i want to change the stock and forehand its supose to be 870 compatible except for the barrel,the bolt of the original stock is a 1/4 inch fine threads and its a 6 inch bolt,the bolt i have from an old 870 is 8 inch long and bigger,did anybody change the stock on the blue line and how did you do it,thanks.