Here are the current gun and melee stats I myself and a few others have put together.

Thanks to Rotaruc, Killua and Flara.

Guns

ER Beamer
clip: 18
damage: 4 (5 with commando)

Metallic
clip:18
damage: 5 (6 with commando)

Pulsar
clip: 18
damage: 5 (6 with commando)

Enranged Rilfe
clip: 18
damage: 6 (7 with commando)

Heavy Laser:
clip:18
damage: 5 (6 with commando) +2 with frenzy mode

Love Rifle
clip: 18
damage: 5 (6 with commando)

Easter Gun
clip:18
damage: 7 (8 with commando)

Photon Cannon (only for top 10 egg hunter)
clip: 18
damage: 6 (7 with commando)

Christmas Rifle
clip: 18
damage: 5 (6 with commando)

Streamer
clip: 18
damage: 3 (4 with commando)

Grenade Launcher
clip: 1
damage 13 (14 with commando)

Goonadier
clip: 5
damage: 3 (4 with commando)


Melee

Combat Knife
damage: 5 (6 with commando)

Sabre
damage: 8 (9 with commando)

Muramasa
damage: 7 (8 with commando)

Carrot
damage: 5 (6 with commando)