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My DD 10.3" barrel is covered by a rail so i tend to forget about it and just pulled the rail of this weekend and sure enough the exterior is covered in rust again.
Do most people oil their the exterior of their barrel after cleaning? If so how do you guys do it with a rail?
Only thing i can think of is to hold it barrel down and spray some wd40 with the plastic tube through a hole in the rail and let it run down vertically to coat the barrel. Kind of messy but i dont know what else to do.
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Everything that is metal gets a light film of oil on all my firearms.
I don't really like WD40 because it's extremely light and seems to evaporate off too quickly. I periodically apply a very thin film of Mobil 1 synthetic to the barrel. Same stuff I use for my motorcycles.
It's kind of a PITA, but I wrap a small thin piece of oily rag a few times around a cleaning rod and work it down the barrel. Be careful not to leave the end of the rod uncovered as it could potentially scratch the barrel. If needed, I'll also put a few small drops of oil onto the barrel through the rail to get better coverage while I'm doing it.
Just spraying a bunch of oil in there will work, but it'll create a heck of a mess and just end up being a dirt and dust trap.
That's just what I do. I'm sure there are a hundred different solutions.