Maverick Weapons and Catalog is a mod that makes a whole lot of changes to the game, but not much at the same time. Here's the list of changes:

• The special ammo will now have the same damage, meaning they'll have the damage of the Express rounds, the accuracy of the Split Point rounds, and the range of the High Velocity rounds.
• Buffed weapon damage.
• All rifles, sniper rifles, and shotgun slugs have enough damage to kill any enemy, including heavy enemies.

What's new in v3.2:

• Added "Regular" and "Explosive" ammo.
• Fixed a couple of bugs.
• Fixed a problem that prevented the game from starting.