Vortex & Butler Creek Lens Caps
For front obj of Nikko Mountmaster AO 4-12x50, 3-9x50
Fits obj Nikko Mountmaster 4x32 AO
Fits obj of certain Hawke Sport HD 40mm and Panorama 40mm models. See list in main description.
Fits obj Hawke Eclipse 1.5-6x44 & possibly other 44mm lens scopes - but check first!
Fits obj Nikko Mountmaster 4x40, 6x40 and 3-9x40 - AO types
Fits obj of certain Hawke Airmax 40mm, Panorama 40mm and Sport HD 40mm. See main description for model list
Fits obj of Nikko Target Master 1" 6-24x50 and 5-20x50
Fits obj of Nikko Diamond 2.5-10x50, Hawke Nite eye digi, Sidewinder 30 (50mm lens), Eclipse 30 50mm & Sport HD IR 50mm HK3016
The largest size, good for many 56mm lens scopes but check first!
Fits eye of Nikko Mountmaster AO and AO IR, plus Nikko 1" Target Masters and Diamond 2.5-10
The largest size they do
Size 19-20 for eyebells with diameters 43.9-45.1mm / 1.73-1.775"
Size 10-11 38.5-39.4mm 1.516"-1.55"
Size 13-14 39.9-40.8mm 1.57"-1.605"
See drop down list for size choices
Oval shape - unique in BC range - 39.1mm x 34mm - 1.54" x 1.34" For Round see sizes 13 or 15
See Eyepiece models for the end you look through (ocular) and Objective models for the "big end" of the scope (Objective)
Fitting Guide - The caps are described with their diameter measure in mm and inches. This refers to the size of scope they will fit - OUTER casing diameter measurement - NOT the scope lens size itself. Most scopes typically add from 5-15mm of diameter over their stated lens size. So be very precise with your measures.
We know sizing can be tricky so to help we have created our own Butler Creek lens caps size match guide here for popular Hawke and Nikko scope models - page opens in new window. The info if direct from Hawke for their model and for Nikko we have tested them from our own stock.
Vortex Defender Lens Caps -
These are more flexible in sizing. If you have a scope with a 40mm lens for example, check out the size 40 to find out what the outer lens size diameter range is. If you are within it you have a fit.