It's really easy to morph the Artificer into an arcane archer. In fact I even wrote up a paragon path for doing just that. Enjoy.
[sblock=Arcane Archer PP]Arcane Archer
"The power of magic flows through me and into my arrows. Surrender now or it will flow into you as well."
Prerequisite: Proficiency with longbow or shortbow.
Arcane Archer Path Features
Infuse Arrows (11th Level): When making a ranged attack you can infuse the attack with magical power. You can add the fire, cold, force, lightning or psychic keyword and damage type to any ranged attack that uses ammunition.
Phase Arrow (11th level): When you spend an action point, ignore cover and concealment untill the end of your turn when making a ranged attack.
The Power of the Bow (16th Level): A bow or crossbow counts as an implement in your hands.
Arcane Archer Exploits
Arrow Storm Arcane Archer attack 11
Your arrow multiplies in midair until they fall on your foes like rain.
Encounter Arcane Weapon Zone
Standard Action Area Burst 3 within Weapon Range
Attack: Intelligence vs AC
Hit: 2[w] + Intelligence modifier damage
Effect: The area becomes difficult terrain until the end of your next turn.
Sustain: Minor the zone persists until the end of your next turn.
Conjure Arrow Arcane Archer Utility 12
An empty quiver is only a momentary inconvenience.
Daily Arcane
Minor Action Personal
Effect: For the rest of this encounter your ranged attacks no longer require ammunition. Add your constituion modifier as damage to all ranged attacks.
Bane Arrow Arcane Archer Attack 20
You infuse an arrow with energies particularly deadly to your foe.
Daily Arcane Weapon
Standard Action Ranged Weapon
Attack: Intelligence +2 vs AC
Hit: 5[w] + Intelligence modifier damage and if the target has any vulnerabilities the attack counts as that sort of damage.[/sblock]