I just got my 18" bull barrel and was wondering if its pretty easy to modify the original stock (synthetic) or pick up a hogue stock? Also are the hogue stocks longer that the factory ones? I want the rifle to look proportional and not look goofy with only a little bit of the barrel stick out from the stock. Wonder if i should have oredered the 20". Freaking addicting hobby...god damnit I have searched the forums and seen some pretty badass looking builds. Im looking to keep the gun all black, with a bi-pod. Already have a scope on it.