Ammo...lots and lots of ammo:awe:
And baby wipes, they've become a must for me since you always get dirty shooting
You could bring latex gloves to keep the junk off your fingers, but that looks suspicious as hell.
My range bag:
http://www.amazon.com/gp/product/B002ZU3I2U
I actually picked it up for 12 bucks a couple years ago. Its just the right size to hold everything I need.
Inside is a Boresnake in whatever caliber I'm shooting.
http://www.amazon.com/Hoppes-24002-B.../dp/B0013RKHJI
By FAR the easiest way to clean at the range. It gets almost all the gunk out in one quick pull. I never leave the range with stuff in the barrel, that creates pits which eventually wear out the gun. Or at least the barrel, which tends to be one of the more expensive parts.
At home I clean with foam from a pump (Hoppes). It gets in there and does a great job, no scrubbing. Just use a rag to wipe it out. If I dont plan on shooting for a while I put on some sort of heavy oil and let the gun sit in its original case.
If I do plan on shooting again soon I just put on a dab of grease on the high friction parts. My favorite grease is the Militec stuff, different from their oil which is used for long term protection.
Also in the range bag I keep a small fiber optic light
http://www.flashlightsunlimited.com/images/PALight/PALFiberOpticTube.jpg
NOT what I use, but similar.
Its good for checking the barrel from the bore.
I have one of those small Molle bags/ pocket organizers with the small delicate stuff, as well as a little note pad for keeping track of my shooting sessions, and all my membership cards.
A small leatherman Squirt for basic repairs, anything major and I take the gun home.
A speed loader from Butler creek.
http://www.amazon.com/Butler-Creek-9.../dp/B001HBHNHE
Once you get the hang of it you can load a bullet per second. Its especially nice for my 33 round Glock magazine.
A bunch of mesh bags for ammo (from 5.11).
Old t-shirt for simple cleaning. Again, the thorough work is always done at home.
Winchester stereo amplified headphones. I keep the mic pointed behind me so no one can sneak up.
Prescription shooting glasses from Zenni. Actually, they arent official shooting glasses. Just high-impact polycarb which exceed the recommended ANSI standard, with a slight yellow tint. Huge lenses to cover me, much bigger than my normal eye glasses.
Wet naps in case the range is out of pumice soap.
I do not carry a spotters scope unless I also have a rifle, in which case I use a larger range back with more junk.
Oh, outside the range bag is a completely enclosed file folder for my targets.