I bet it is not rust, but the same stuff the Army uses or at least used to use to prevent rust. That stuff will last a 100 years and not let rust form.It is nasty too...-Y
That looks like rust to me
Quote from: Wayne52 on August 18, 2017, 10:38:56 PMThat looks like rust to me Me too. Thanks to the quality photos attached you can click on it and get a close look.That's not cosmoline.
What about the crushed pellet on the right side of the barrel nut. That needs to be removed as well.Mike