I never had any idea about CO2 Colts before (I'm mainly Beretta and MAK guy ), but after I've seen that picture from Umarex site, read description (yes, it has a metal frame and a metal slide) and watching this two videos: http://www.youtube.com/watch?v=u674KxH0wbE http://www.youtube.com/watch?v=Iw1IWk0V6vc (same poster)
I thought - I have to get this one And I did, hope it will not disappoint me.