[SM] Listing 17 plugins:
01 "[L4D2] Improved Prevent M60 Drop" (1.6) by MasterMind420, Ludastar, DeathChaos25
02 "Basic Comm Control" (1.10.0.647
by AlliedModders LLC
03 "Basic Ban Commands" (1.10.0.647
by AlliedModders LLC
04 "Basic Chat" (1.10.0.647
by AlliedModders LLC
05 "Fun Commands" (1.10.0.647
by AlliedModders LLC
06 "[L4D2] Weapon/Zombie Spawner" (1.0a) by Zuko & McFlurry
07 "Admin Help" (1.10.0.647
by AlliedModders LLC
08 "Anti-Flood" (1.10.0.647
by AlliedModders LLC
09 "Basic Votes" (1.10.0.647
by AlliedModders LLC
10 "Admin Menu" (1.10.0.647
by AlliedModders LLC
11 "Client Preferences" (1.10.0.647
by AlliedModders LLC
12 "Sound Commands" (1.10.0.647
by AlliedModders LLC
13 "[L4D & L4D2] Left 4 DHooks Direct" (1.10) by SilverShot
14 "Basic Info Triggers" (1.10.0.647
by AlliedModders LLC
15 "Basic Commands" (1.10.0.647
by AlliedModders LLC
16 "Fun Votes" (1.10.0.647
by AlliedModders LLC
17 "Admin File Reader" (1.10.0.647
by AlliedModders LLC
I tried with the least plugins as possible and it still occurs. The problem is very specific but I recommend you try it for yourself. All it takes is just using an ammo pile with the m60 anytime you don't have a full mag with it and as you will be shooting with it, the spare ammo will go up, you'll see.