AEG Bucking

This is a general shape for an AEG bucking. I havent been able to print it perfect but my results are close.I printed 2 versions before. The first one looked flawless but the material I used was TPU and the solid areas were a bit too rigid for the bucking to bend. So I printed another previews version wich could bend more those solid areas and still wasnt able to bend enough for a normal hop up. So I created this one with the hope that someone could help me on how to print one perfectly.