I have this heym SR 10 action I barreled. I want to drop it in a Mcmillan stock. They have an inlet program for an SR-20 action and a Mauser 3000. Will one of these two programs work? I thought the Mauser 3000 rifle used the heym SR 10 action but not 100% sure. Just trying to find out if I can get the order process rolling with out of sending the barreled out to Mcmillan.