Scope Cap Compatibility & Sizing Guide
Find the correct BullCraft Scope Cap for your optic using the compatibility chart below.
Our Scope Caps are sized according to the outside diameter of the scope's objective housing, not the advertised objective lens diameter. The same sizing applies to both Open Objective and Killflash Scope Caps.
Find Your Scope
Select or search for your scope manufacturer and model below to find the recommended BullCraft Scope Cap size.
Don't See Your Scope?
No problem. BullCraft Scope Caps use a friction-fit design, so you can determine the correct size by measuring your optic.
Using a set of calipers, measure the outside diameter (OD) of the objective housing at the front of your scope where the Scope Cap will be installed.
The Scope Cap slides approximately 10mm onto the objective housing, so measure the outside diameter within this mounting area.
Example:
If the outside diameter of your scope's objective housing measures 52mm, select the 52mm Scope Cap.
Don't Use the Advertised Objective Size
The objective size in your scope's model name refers to the diameter of the objective lens itself, not the outside diameter of the scope housing.
For example, a scope marked 1-6x24 has a 24mm objective lens, but may require a 30mm, 33mm, 34mm, or other size Scope Cap depending on the design of the optic.
Always use the compatibility chart or measure the outside diameter of your optic before ordering.
Available Scope Cap Sizes
24mm • 30mm • 33mm • 34mm • 36mm • 39.5mm • 48mm • 50mm • 52mm • 53mm • 56mm • 59mm • 63mm • 65mm • 67mm
Fitment Notes
Our compatibility chart is continually expanding as additional optics and fitments are confirmed.
Scope manufacturers may make dimensional changes between different models, generations, or production revisions. If you're unsure of your optic's fitment, we recommend measuring the objective housing with calipers before ordering.
If your measurement does not correspond to one of our available sizes, contact us with your scope manufacturer, model, and measured objective housing diameter. We may be able to help determine the correct fit or use your information to expand our available sizing.