This is the one thing that always bothered me about the 3dp90. To me it always looked way too long so I redesigned a shorter stock that will work with the same length bolt guide rods and springs that are used in the brace option. For anyone that may be interested I will upload this to my Odysee page tomorrow. I had some help from Stainedglasses44 and just wanted to credit him as well.
I think it could be a possibility like the bigger one has. On this one I thickened the inside of it where it would normally have the bolt cut out area because the bolt doesn’t come back far enough to interact with it anyway. I also did this to the area where the springs and guide rods insert. I had some help from Stainedglasses44 on this as well.