I want to use a bipod for my sporter weight 30-30 barrel. Which forend would work best? I am looking at a wooden forend from Gunstocks, the Choate synthetic sporter forearm, or the Choate varmint forearm. Will the varmint forearm work with the sporter barrel? If you were to choose, which one would work the best? Are there other choices I am not considering? Does the Gunstock forearm come with the spacer?