Hey, Midget, do you have any missile model kits?
I've seen a guy on HT use 1:32 (or in this case I believe 1:48) parts in 1:18 applications. I figure something like a 1:32 MIM-23 Hawk missile would look believable hanging on the hardpoints of a Huey or MD 500. It's an option other than a Hasbro MMS, anyhow. Maybe a small scale kit of a honking big ICBM or SCUD could work too.
Thoughts?