This is a rifle cleaning ramrod tip because I broke one and needed to replace it. The threading is 8-32 and it closely resembles the one in the standard Hoppe's cleaning kit for small calibers (22LR, .223, 22 to 284, blah)
I printed in ABS at 100% infill with supports and raft. Hopefully ABS can stand up to the cleaning solvents (MSDS: acetone, kerosene(petroleum), oleic acid, amyl acetate, ammonium hydroxide). I couldn't find a good chemical datasheet for PLA but I'll have to try it out and see sometime.
Afternote: PLA seemed to hold up well during print and 'seemed' to hold up well against solvent (ABS may have weakened a bit, not positive). I'll try to update after actually using them.