The following are known Action Replay Codes for Metal Slug 7 on Nintendo DS (NDS).
Game ID: YM7E-66BDC88E
Invincibility
220f7c78 0000005f
Infinite Lives
220f7ef7 000000ff
220f7ef8 000000ff
Infinite Primary Ammo
120f7cb4 0000ffff
Infinite Secondary Ammo...
100% pow's rescued
action
action replay
action replay codes
all levels unlocked
always have fire bombs
always have grenades
codes
infinite lives
infinite primary ammo
infinite secondary ammo
invincibility
max multiplier
metal
metal slug 7
nds
nintendo ds
replay
replay codes
secondary weapon modifier
slug
us