Well for your R/C i think you already got your anwser, Personally I always run one of the silicone hair bands just to be safe.

Now for your your AR-15 you do it like this

[link]http://www.youtube.com/watch?v=PVfwFP_RwTQ[/link]

Great way to chew up ammo, get kicked out of your local range and or get a visit from ATF,
FBI,NSA or whatever Three letter agency gets to you first.


Now this guys got it down, him and INTEGRA don't need no stinkin rubber bands.

http://www.youtube.com/watch?v=GIC8SMttjjo