They sure are slow about comming up with products for the get4. not so much for the 17 but for the 21. I cant get a frame plug for it. I am not really found of the guide rod. Dont get me wrong, in all the years I have been shooting I have never had one break. But I would love to find a nice steel one for the 17 and 21. But I will just plug along and continue looking. Have a good night guy's.