Ops Core Ballistic Helmet Comparison

I purchased this Ops Core ballistic helmets and I am showing how I set them up. I also show the differences in dimensions between the helmets. I will include where I purchased each one of these helmets. The rest of the accessories were bought from hcctac.com.
NOTE: the Ops Core XP is a HIGH CUT helmet and will need a specific kind helmet cover and the SF/XR helmets are the SUPER HIGH CUT. Please be aware of this when purchasing the proper fitting cover. Here is a link of an option for the Ops Core XP helmet cover:
agilitegear.co...
Ops Core XP:
tnvc.com/shop/...
Ops Core Fast SF Helmet:
www.customnigh...
Ops Core Fast XR:
www.hcctac.com...
Agilite Helmet Covers:
agilitegear.co...