I modified the Cobra Magazine to fit my knockoff cobra crossbow. I had to make it about 3.5mm longer. I still have the issue of the bolts falling into the area where the safety is, but I think I have an idea for that. The bolts don’t fit as tight as I like and I am thinking a complete rework may be in order but it functions for now.
I also included the magazine spring assembly from the Sliding Legolini I made (google it, you won’t find it on thingiverse). No rubber bands needed with this.
Finally I changed the rear so it wasn’t slopping. Now it goes straight across and I was able to use my existing picatinny rail. I should have made the M3 nut indents smaller, my nuts spun in these.