Thanks for the suggestions guys.
I ended up buying a regular gun with a set of attachments that included the one below. No need to swap zerk fittings with this thing!
Thanks for the thread spec, kazarw, and it's good to know the battery powered guns work, Beastmaster. I looked at those and wasn't sure. Imagine I'll pick one up.
Right angle grease coupler:
The whole kit:
http://www.harborfreight.com/cpi/cta...emnumber=91398