Need more geometry : One loop at the back to support the internal cut for the hammer channel. Two loops along the length to support both sides of the slide, you can also change the flow of these to be one continuous loop like the front on the back.
If this is your High polygon mesh, add as many edge loops as you need, but try and keep it manageable and efficient! For the slide, I would start off with one high sided cylinder for the best smoothing along the top then remove the bottom half and add the boxy bottom. Starting with high sides makes it easier to cut out…
Hey @Repete It was a good suggestion and considered it if I couldn't problem solve correctly because It will ultimately triangulate but I wanted to do some High poly smoothing to a copy so I can bake the AO/Normals into this one. @RedRogue, thanks for the reference, it helped. I was scared to add topo. Don't know if it was…