No prob', buddy.
"It appears to me that the contact between the moveable bayonet lug and
the underside of the barrel could create some rough spots on the underside
of the barrel (which would be in the form of two parallel lines). When Day
needed to apply the tape to the underside of the barrel, all he needed to do
was slide the bayonet lug away from the print (towards the muzzle end of
the barrel. The rough spots (in the form of two parallel lines) could retain
some of the fingerprint powder. And those rough spots would show up on
the lift as two parallel lines."
See post by Charles Collins here: https://www.jfkassassinationforum.com/index.php/topic,3030.msg114974.html#msg114974 on Page 29 of the Topic: "Ct's firstly ask yourself, where does my theory go?" Link.
Thank you for providing the photos that lead you to believe the two parallel lines were made by the bayonet lug.
I'd suggest that you think about that idea.... Because is not plausible. We need the palm print posted again so we can discuss the plausibility of your idea.
As I recall detective Day said that he saw some of the print on the metal barrel sticking out from beneath the wooden foregrip, so he decided to dismantle the rifle to expose the entire print.
Do I have that right?
Charles Collins posted this last year.....
I don't know why I missed this post by Charles Collins
I ran across this photo which shows more clearly that the two edges which contact the underside of the barrel are rough. It appears to me that there are teeth intentionally made into the edges. These teeth are slanted such that they would grip the underside of the barrel when the lug is pushed back towards the bolt, and would release very easily when it is pushed toward the muzzle end of the barrel. Also, take another look at the two lines on the lift done by Day. They look to me like impressions left on the underside of the barrel by similar teeth could have formed them. (Where's a forensic dentist when we need one?
)