I just saw, for the first time, a Colt Tactical 22 in the latest NRA magazine. Looks like a ton of fun for a decent price, compared to some other choices...

<a href="" target="_blank">http://www.thefirearmblog.com/blog/2009/01/13/colt-umarex-m4-carbine-22-tactical-rimfire-ar-15/</a>

http://www.precisionweapons.com/CartGenie/prod-640.htm