I just picked up a new TP9 SFX and attempted to mount a Vortex Venum to it. I mounted the number 1 plate to the gun and then started mounting the optic to the plate. As I turned the screws I noticed it felt spongy. I took the screws out and the helicoils from the mounting plate had come out with the screws.
Anyone else had this issue? How do I fix this?