There are hundreds of weapon mods out here but thess aren't that bad, and I've never seen a briefcase model either (replacing the cane)
The pistol is a silenced Springfield 1911 .45 (pro's choise)
The rifle is the (never largely scale produced) Walther 2000
The knife is just a knife (what did you expect)but on the hunting knife side.
I also made a good HK mp7 model (sadly I was unable to produce decent textures)
For pics visit this topic at Gtaforums: http://www.gtaforums.com/index.php?showtopic=255170
Nice mod! I like this, the briefcae mod is funny but also useful, when i equip the briefcase while playing MTA SA my MTA stops sending my movement data and i'm in "godmode" and i can move without other knowing it, they see only that i'm stading in the place. Like a cheat! AWESOME!! THANKS!