I put the AA MPR FT stripper on my EV2 mk4...... and it needed to be sanded out slightly. I assumed this to be because of the plating on the barrel.
Originally I put my wifes MPR stripper on my EV2 and it was clear that had been "reamed" out a touch after machining.... It went straight on.
I purchased a new one therefore for my EV2.... and as above it needed to be took out a touch to slide on nicely.
EV2 MkIV Red. Sightron SIII 10-50x60 FT.
AJP Rail. Sportsmatch ATP66.