Download:
The current version is v4.7c. Below are the following files, a RAR file that has all necessary files compressed into RAR format (Use a program such as WinRAR to extract the archive). The EXE is a installation program that will walk you through the steps and make sure the files end up where they need to be.

[Current Version]
To download v4.7c please download AA 2.5 Deploy
v4.7c Server Version (PB Checks are inside the Pack)
MD5: 92fd0aab7f489f602fc30849f31e5cbc

Changelog:

Upcoming 5.0:
Deleted needless playerstarts on Urban Defense
Fixed ZoneInfo Actors with lighting and fog issues on Urban Defense
Zoned 'Snipers Nest', Possible slight FPS increase on Urban Defense
Fixed windows blocking coronas on SF Refinery
Adjusted window alignment and fixed glass emitters (for windows) on SF Refinery
Fixed some playerblocks on SF Refinery
Removed StaticMeshes that aren't viewed by the normal player, reducing the amount the player has to draw on SF Refinery
Re-did playerstarts and deleted objectives (something got lost in the conversion from 2.8 with random spawns and objectives) on SF Refinery
The custom textures in the following maps have proper material types set now: Aztec, Ice, Monkey Island, Terminal Conflict
Reduced graphical lag on Square and added 2 new rooms
Fixed VIP and Helicopter issue on Hospital


4.7c:
Fixed bathroom corridor bug on Pipeline
Added more ways to get on roof on Pipeline
Completely removed Prison Escort

4.7b:
Took out playerstart changes on Pipeline
Made changes to help FPS (zoning, lowering lightmaps on over 500 surfaces)
Fixed "Reporting In: In the air" in areas not in the air
Fixed Teh Yeti's Lair issue of joining via server browser
Added NVG to Urban Assault Night
Fixed RandomSound issue on Bridge Construction
Changed player skins on Breakout and Pipeline
Modded Aztec's water properties
 
4.7a:
Removed Pipeline respawn testing  

4.7:
New maps: Pipeline mod (inspired by AA3 and various 2.5 players) & PBall (2.8 conversion)
Maps that were taken out: Border, Bridge Day, Bridge NE, Dusk, Hemp Farm, Lumbridge Castle, Pacman Maze & Training v7
Names/logo's were taken out of maps to prevent distraction and actually lower the mAAp Pack size
Some indoor maps like Aimfun and Aimway TE had no zone info, this caused guns to fire with outside sounds
New menu music
New deployment navigaion with colors in some areas
New credits page in the console and loading screens
New splash logo
New distribution method: 2.5 Deploy
Size reduction from 145MB to 90MB (compressed)