Originally Posted by SpinE
You shouldn't need a different one for they hybrid guide. PM Ccluff2, he had mad some better ones recently.
i did, he hasnt gotten back to me
right now im using 2 worn bumpers stacked, 1 ripped and its working. guess the hybrid guide is slightly out of spec allowing the bolt can to move causing pneumatic lockout. the thick white bumper that came with my last eigenbolt is twice the thickness of a standard bumper and works with it.