http://www.armoredcore.net/players/acv/2012/03/30/2556Appears to have been posted yesterday, not sure if it has been implemented or not. Due to generalized descriptions, I'm assuming no, and will be with season reset (in respect to Japan, not to other regions, since I don't believe everything is done together).
LEGS
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~2 LEGS-L
ULG-10/L
ULG-09 SNOWDON
ULG-09/L
-Load capacity increase
~2 LEGS-M
ULG-21
-Lower AP
-Lower Defense
~REVERSE JOINT-L
-Higher AP
-Ready Position grants improved parameters
~4 LEGS
-Boost drive performance enhanced
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ARMS UNIT
========
~HAND GUN
-Longer range (Specifically, better decay value)
~SHOTGUN
-Lower reload time
~RIFLE
TANSY RF12
-Longer reload time
-Shooting Stability lower (I can't recall the stat name, will have to check)
-Lower decay
LAMPOURDE RF23
-Higher muzzle velocity
-Lower decay
~BATTLE RIFLE
KO-2H6/STREKOZA
-Longer reload time
~PULSE GUN
-Higher shooting stability (name check needed, same as above)
-Lower energy usage (not consumption, under weight)
-Less explosion range
~PULSE MACHINEGUN
-Higher lock-on time
~PLASMA GUN
-Lower energy usage (same as above)
~LASER RIFLE
LR-81 KARASAWA
All rifles except the above will be adjusted as the following
-Longer range (pretty sure this is just optimal range, not other values associated with damage calculation at range)
-Lower energy usage (same as above)
-Less charge time required
LR-81 KARASAWA
LR-81M KRSW
·All rifles except the above will have less firepower
~LASER BLADE
-Lower energy usage (same as above)
-Higher damage
~RAIL CANNON
-Lower reload time
-Lower charge time required
-Increased muzzle velocity
~HOWITZER
-Lower reload time
-Higher ammo count
~HEAT CANNON
-Shooting stability higher
~LASER CANNON
-higher muzzle velocity
-Lower energy usage
~FLASH ROCKET
-AoE decreased (I am sad)
~ROCKET
-Higher ammo count
~KE MISSILE
SPREAD MISSILE
-Higher ammo count
-Increase top cruising speed
HIGH SPEED MISSILE
-Higher ammo count
VERTICAL MISSILE
-Higher ammo count
~CE MISSILE
SHORT RANGE MISSILE
-Higher ammo count
-Adjustment to missile guidance (didn't specify which way)
STEALTH MISSILE
-Higher ammo count
-Adjustment to missile guidance
AS MISSILE
-Higher ammo count
-Adjustment to missile guidance
~COUNTER GUN (Auto gun i think, not anti missile)
UCS-22 MYSORE
-Higher impact force
~EN AMPLIFIER
-Lower range amplification
-Energy consumption increased
*Amplifier will be divided into damage amplification type and range amplification type.