Scope

Scopes are augments crafted by engineers. They can be applied to bows, crossbows and guns to boost damage, critical strike rating, ranged haste rating, ranged hit rating, or something else.
Scopes function like an Enchantment in that they are a permanent augmentation and that only one can be applied to the item at any given time.
While the scope itself can only be created by someone skilled in Engineering, the act of applying it to the ranged weapon can be done by anyone who meets the base level requirement (and, in the case with Flintlocke's Woodchucker, class requirement) of the item.
:Note: This list is accurate as of Patch 4.2.0.
Name 	Level	Stats 	Schematic Source 	Skill
Crude Scope 	5 	+1 Damage 	Engineering Trainer (Apprentice-level) 	60
Standard Scope 	10 	+2 Damage 	Engineering Trainer (Journeyman-level) 	110
Accurate Scope 	20 	+3 Damage 	Sold by in The Cape of Stranglethorn for 	180
Deadly Scope 	30 	+5 Damage 	Schematic: Deadly Scope sold by in Northern Stranglethorn and in Blackrock Depths for 	210
Sniper Scope 	40 	+7 Damage 	Schematic: Sniper Scope, a random world drop from level 40-50 mobs 	240
Biznicks 247x128 Accurascope	50 	+30 Ranged Hit Rating 	Schematic: Biznicks 247x128 Accurascope dropped by most bosses in the Molten Core (very low drop rate)	300
Adamantite Scope 	55 	+10 Damage 	Sold by in Shadowmoon Valley and in Hellfire Peninsula for 	335
Khorium Scope 	55 	+12 Damage 	Schematic: Khorium Scope dropped by in Netherstorm (very low drop rate) 	360
Stabilized Eternium Scope 	60 	+28 Critical Strike Rating 	Schematic: Stabilized Eternium Scope dropped by in Karazhan (very low drop rate) 	375
Diamond-Cut Refractor Scope 	70 	+15 Damage 	Engineering trainer (Grand Master-level) 	390
Sun Scope 	70 	+40 Ranged Haste 	Engineering trainer (Grand Master-level) 	425
Heartseeker Scope 	70 	+40 Critical Strike Rating 	Engineering trainer (Grand Master-level) 	430
R19 Threatfinder 	80 	+88 Ranged Hit Rating 	Engineering trainer (Grand Master-level) 	450
Safety Catch Removal Kit 	80 	+88 Ranged Haste 	Engineering trainer (Grand Master-level) 	450
Gnomish X-Ray Scope 	80 	Sometimes increases Ranged Attack Power by 800 for 10 sec 	Engineering trainer (Illustrious Grand Master-level) 	515
Flintlocke's Woodchucker 	80 	Sometimes launches a rabid critter, dealing additional damage to the target and increasing your Agility by 300 for 10 sec	Sold by at the Molten Front for . 	515
* Items tagged with require The Burning Crusade to craft only. Items with level 60 or less requirements can still be used by non-BC players.
* Items tagged with require Wrath of the Lich King to craft only.
* Items tagged with require Cataclysm to craft only.
 
 Scopes