For people who have smaller print beds can still print the receiver. The two pieces are one file. Once you print the pieces glue use adhesive to glue the two together.
You might need to sand down the rods a little from the to go in easier. you could force them but do that at your own risk!
UPDATE (18/5/2019): I didn't consider the tolerances enough! I have changed the files to be in two file and i have change the rods to be a little smaller so it won't be so tight! If you still struggle for them to fit sand them!