looking for magic scope for sniper rifle. D20 moder x pathfinder X 3.5 all allowed

[Nosta]

so I am a slayer who is an assassin in the game and I want to have as much range on my sniper rife as I can I have far shot and have Distance on the gun. now I'd like to have a magical scope on the the gun.

I have sniper Goggles so I can sneak attack from any range. I have my Dc for my assassinate ability up to 25
I use mage Bane bullets

but ya i'm looking for a magical scope (can be a crossbow scope) I just want it to be magical

[MythicCorgi]

There are three that I know of the:

Laser Sight: This small, cylindrical device can be attached to the barrel of any firearm. When activated, it emits a low-power laser beam that paints a small red dot on the target. This effect grants the user a +1 circumstance bonus on all attack rolls made with that weapon. Further, a laser sight reduces the penalty for firing into melee by 2.

See Invisibility Sight: This sight can be attached to a single two-handed firearm. When this is done, the sight becomes part of the weapon, but can be removed from that weapon with a full-round action. A firearm wielder using a firearm that has this sight can choose to spend a full-round action to either locate an invisible creature within line of sight or make a single shot that ignores the invisibility of a creature that she knows is in the area.

and

Far Reaching Sight: This sight can be attached to a single two-handed firearm. When this is done, the sight becomes part of the weapon, but can be removed from that weapon with a full-round action. A firearm wielder can choose to spend a full-round action to make a single shot with a firearm that has this sight. When she does, she can resolve the attack against the touch AC of her target regardless of the range increment.

You might also want

Oil of Silence: When applied to a one-handed or two-handed firearm, this strange grayish oil renders that firearm silent for 1 hour. Five vials of oil of silence can be used in conjunction to silence a Large firearm siege engine, and 10 can be used to silence a Huge firearm siege engine. The oil does not work on firearm siege engines that are larger than Huge.

[Psyren]

Links:

Laser Sight (http://www.archivesofnethys.com/EquipmentTechMiscDisplay.aspx?ItemName=Laser%20sig ht)
See Invisibility Sight (http://paizo.com/pathfinderRPG/prd/ultimateCombat/combat/firearms.html#see-invisibility-sight)
Far-Reaching Sight (http://www.d20pfsrd.com/magic-items/wondrous-items/wondrous-items/e-g/far-reaching-sight)

For giggles I pulled each one from a different source site.

[DrMotives]

Arms & Equipment Guide has a bow / crossbow scope masterwork item that reduces range penalties for all ranges past the first 2.