aim_deagle7k map from CS:GO for CSS
If you want to practice deagle shooting, but want variety, download the css map called aim_deagle7k from CS:GO. It is a renovated room, with more thoughtful detailing and placement of objects, a lot of windows and pipes have appeared. Now the map really looks like a real warehouse. By the way, a similar map is in the workshop, and you can also play cs go on it.
P.S. All versions of CS Source (yes, it goes to v34).
Recommended to download for CS:S