Jun 21, 2012 · Leave the chemicals to do their work and get to the bolt/bolt carrier assemblies. Spray the bolt with either Slip 725 or Evinrude Johnson Engine Turner and let it sit. Clean the bolt carrier assembly by removing carbon from the bolt carrier (yeah, that chrome-lined thing where the bolt goes in) and the bottom of the bolt carrier itself.
ARMY TM 9-1005-249-23&P AIR FORCE TO-11W3-5-5-24 COAST GUARD COMDTINST M8370.9 WARNING (cont) Below Direct Support Maintenance, DO NOT interchange bolt assemblies from one weapon to another.