brother dogs,
need instructions on removing and installing barrel extentions.
anyone have firsthand knowledge of les baer uppers and parts

thanks

i know nothyng about "les baer", i know a lyttle about AR-15s.........

ya need a barrel vise clamp, a very big strong vise, & a very special wrench, & a breaker bar, maybe a tad bit of heat, then take a water filled cartridge case that you had already froze drop in chamber & apply counter-clock wize force & they usually break free pretty easily......