There are many things you will need
I have owned an AR15 now for close to 12yrs and when I first got it it seems so expensive and I was almost afraid to beat it up. Then one day I was holding a local shooting event at a gun club and it started to drizzle, several guys with the $2000 rifles didn’t show up to the event because they were afraid their stuff would get ruined. An old guy that was hanging with us burst out laughing and said he trucked an M1 Garand around for 2 years in the rain and snow and is gun wasn’t ruined. It’s funny how many prima donna their are in the tactical community and that is so common with the AR15 accessorized and customized world.
I don’t teach carbine courses but I listen to the guys that do and over cleaning seems to do more damage to guns than not cleaning them enough. I’ve seen many firearms go down due to the lack of lubrication, but many gun cleaning supplies from years ago are out dated compared to what Break Free CLP and M-Pro 7 products are doing. I use break free products basically to protect hunting guns and for a do it all cleaning, but for handguns and my larger caliber semi-auto firearms I use M-Pro7 gun oils, it seems to last longer and doesn’t evaporate. Sometimes I don’t get to shoot a gun for a year or more, but I like knowing that nothing drained or evaporated from the firearm.