Many military style firearms made these days are very easy to clean, it goes with the design of the firearm. Firearms like the M1 Garand and Even M14 have a unique design but are one of the few that are very difficult to clean from the chamber forward, until boresnakes came out. There are always some variables with the types of gun cleaning supplies you might need from gun lube, gun grease, cleaning brushes or even the boresnake caliber, but there is still a need to monitor how clean your firearms are, when you clean them. Sometimes people just do a quick wipe down, but I recently had a friend purchase an AR15 that was about 15yrs old but in almost perfect condition. He stopped over and I checked it out, and it was in almost “mint” condition, until I opened up the bolt carrier group and found an extremely corroded hole right on the bottom of the bolt carrier. There must have been something that got in there an stayed on the firearm while it was in storage. Something like that would be far more destructive if it was on the bolt head, or even in the hard to see barrel rifling.
Pay attention to what kind of gun lubes you are using at check to make sure that it has corrosion protection. Many people are experimenting with synthetic oils these days, but many of them do not protect metal. Slip 2000 is one of our more popular brands we sell and I have learned to wipe down all of my firearms after handling them because even that rack queen can get messed up if you don’t open it up and check on. Do an audit of the “quality” of your gun cleaning supplies, are the brushes worn? Is your boresnake getting frayed and falling apart? A closet or even a gun safe that does not have good ventilation can have brief periods of moisture build up that can be extremely destructive to tools, firearms and even ammunition. There are also some variables with calibers and sometimes using a brush that works for 9mm, 357mag, 30 Carbine, 30/30 level action, might miss a few spots inside a barrel. I have a small light that can be inserted into the barrel, to do barrel inspections from time to time and the longer you own a firearm, the more you’ll realize you’ve missed a few spots. Accuracy can be impacted by this.