Mueller Turret Caps (click on photo) - Mueller Rifle Scopes
Vortex Custom Turrets
24mm 24-410 Black Turret Cap, 3.4mm Orifice
Amazon.com: Nrowe Factory Replacement Elevation Cap for ROMEO4,ROMEO5, Holosun-403,503,515 red dot Sights, Windage Turret Cap, Black (Pack of 2) : Automotive
Amazon.com : Trijicon ACOG Adjuster Caps for 1.5x16S, 1.5x24, 2x20, 3x24 and 3x30 Models : Sports & Outdoors
Swarovski Optik AV Scope Turret Cap #44037 - Camera Land NY