Stand you rifle up vertical against a wall before the 6 o'clock news. Put a good dose of boretech c4 on the crow so it soaks in. Have diner, dessert , watch movie, have sex then wipe the muzzle with a towel then it should be all clean( talking about the rifle muzzle here !). If not re apply c4 and leave over night and should be all clean in the morning.
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