http://i80.photobucket.com/albums/j1...e-crt-15-1.jpg
This. I own the
g and g tool and the
botach tactical tool, this one beats them both (it is $40 every place). A lot of people say the carbon on the bolt tail is a non-issue and to leave it alone. I prefer to clean the bolt tail because it can corrode underneath the carbon if ignored long enough. If you aren't concerned about bolt tail carbon enough to buy a dedicated tool, a scotch brite pad and solvent will remove a lot of it.
I do really like
tetra grease. It works up to 750 degrees F and you can rub it in til it disappears, and embeds in the metal. Good for the bolt, bolt tail, bolt lugs, the 4 sliding rails on the bolt carrier group, the cam pin, and hammer where the BCG slides over it.
AR15 chamber brush if you don't already have one. Mine fits so tight i just coat it with CLP and jam it in, pull it straight out, turn the brush and repeat 3 or 4 times.
Automotive moly grease (the cheap stuff is perfectly fine). Rather then waste the expensive Tetra grease here I use it on the buffer spring and in the buffer tube. It REALLY helps if that "BOINGG" sound during firing annoys you and you want to make it go away! I will also use it if i am out of tetra grease. I work in automotive and know enough about it to believe if it can stand up to truck wheel bearings at 70 mph on a 110 degree day, it'll work in my AR.
Hand guard removal tool. I made mine by bending a 3 foot long piece of threaded rod into an arrowhead shape, in a vice and covering it with automotive rubber hose to protect the handguard ring. To use it i sit in a chair, brace the v-end under my leg, place it over the ring and apply pressure. Then i use a screwdriver to gingerly pop off the handguards. It works, sort of, but i think i'd been better off spending the 20 bucks to get a real one from brownells.
I made it because i want to clean under the handguards occasionally -although i guess you could just flush it out with brake cleaner and call it good. But if dirt, bugs, dead snails or mice are building up under the handguards i want to clean that out too, why do a half-azzed cleaning?