I started polishing the rear bolt to get rid of the ridges on it and then it HIT ME.....the ridges on it are to hold the lubricating oil on it. If it is smooth the oil would get pushed ahead of the bolt like a piston.

One thing I've noticed is that on my marker, the area of the front bolt feels different than the the are of receiver for the rear bolt. I can get the rear bolt area nice and smooth. But the area where the front bolt moves has pitting on it that I can feel no matter how much I polish it. I mean to completely remove the pitting I would have to remove .5mm of metal maybe and that WOULD BE HORRIBLE for the tolerances.

__________________


Speedball; choice of the Ritalin generation !