Half-Life: Source Enhanced is an HD replacement pack for the default Half-Life: Source content. This includes models, materials, and map textures. Not to mention the other content that is also released in this mod.
Here's some old screenshots when this mod first started out.
the stinger looks kinda weird but the apache looks awesome!
yeah the apache is great. The rocket launcher looks a bit weird, but,being a stinger launcher, i guess its kinda supposed to look like that