Why not

Nechronica "Lullaby on Mute" Shooting Attack Changes:
ARM:
T1:
Handcannon [Action/1/0-1] Shooting Attack 1

T2:
Sniper Rifle [Action/2/2-3] Shooting Attack 2, +1 to the attack check
Bear Gun [Action/2/0-2] Shooting Attack 3
Machine Gun [Action/2/1] Shooting Attack 1 + Area, +1 to the check
Twin Pistols [Action/2/0-1] Shooting Attack 2 + Chain 1
Net Gun [Action/2/1] Shooting Attack 1 + Stagger. If this attack hits, until the end of the Round, Move Maneuvers performed by the target on themselves cost them an additional 2 AP (this effect does not stack if multiple attacks are made.)

T3:
Undead Gun [Action/2/1-2] Shooting Attack 1 + Explosive + Area
AT Rifle [Action/3/1-3] Shooting Attack 5
Shotgun [Action/2/0-1] Shooting Attack 2+Explosive

ENH:
T2:
Laser [Action/2/0-3] Shooting Attack 1 + Dismember