Quote Originally Posted by edbear2 View Post
The last one I had to do, which was rock solid to the extent that the barrel would start to flex before the piston moved was sorted quickly if a bit messily by pouring acetone into the cylinder which turned the remnants of the buffer to a slurry.

ATB, Ed
Excellent ... I did much the same a couple of years ago ... squirted solvent through the transfer port and down the cylinder. piston moved / removed very easily. I was not convinced that the jam was caused by any expansion of the buffer washer ... more that it had disintegrated and bits of it had jammed in places around the circumference, effectively preventing free passage.
Cheers, Phil