They are Troy micros. 1.93 scalarworks mount for the comp m5. You can see through the irons underneath the scalarworks mount. The beauty of a skeletonized mount
After further inspection this morning
-Buffer retracts fully with wood dowel (smooth)
-Inspected the spring and it looks fine
-BCG does not get stuck if I remove rear takedown pin. It will cycle almost perfectly (slight resistance)
-swapped buffer systems from another lower and had same results...
I can push the buffer back with my finger no problem and it’s smooth. The lower is in mint condition…not new but not disrespected. I’ll pull the spring out in the a.m. and check it out. From what I have researched, it may be the buffer tube alignment
Noveske upper on lmt mars lower. Pull charging handle back and it gets jammed up about half way then stuck. Have to use my thumb to push the bcg back into battery. Put the Noveske upper on Noveske lower and she is fine (rules out anything with the upper).
Out of spec lower? Buffer tube?