I want to stick with an American tank for my first build and have chosen an M1 Abrams. I see that there are metal sprockets andtreads /w rubber pads available in 1/24. I think Icould mod/upgrade the motors and gear boxes for torgue and speed. So far my research hasshown that theavailable Abrams throw thestock track . My bet is the lack of quality treads and road wheels. Also most of them advertise 25m distance on an airsoft BB straight out of thebox. Here is a reply to a post frommember "LocalLoser"who bought one from Dick's Sporting Goods: http://www.rcuniverse.com/forum/m_3579470/tm.htm

Some Abrams manufacturers I found

Firepower (Dick's Sporting Goods)
VS Tank Pro
Tokyo Marui
Heng Long

Just a couple I found. Depending on how I have to order I may just get this from Dick's website. Otherwise a MArui or VSTP

FlexXx</p>