I created a cylinder and added some extrudes. Then added 3 more cylinders. The other two pieces I created by making a cube in the general shape with divisions. Then I used split polygon tool to make a round corner inside the 4 corners of the front and rear faces. Then I performed a smooth and deleted some unneccessary edge lines created from the smooth. Then I extruded inward the front and rear faces. After that, I used a non-linear bend to curve it a little.
Don't be satisfied with what you can do but rather strive to do the things you can't do!
Exceed Expectations!