User blog comment:Charcoal121/Favorite Weapons: Recon/@comment-3554559-20120106145501/@comment-3554559-20120107073602

While for the most part they're pretty much identical (eg: same damage, same accuracy, same recoil.) they do have some differences:

The M39 has the fastest bullet speed and farthest range before the bullet disappears, the MK11 has the fastest reloads. The QBU-88 has the same suppression effect as the assault rifles, meaning it's harder for the target to realize missed shots.

And the SVD? Has the slowest bullet speed and the shortest distance before the bullet disappears.