These have low profile buckles and endless uses to hook up odd non modular pack combos or lashing and compressing loads

Quick hookup for emod or molle. Works great with my F1 mainframe.

This system is very user friendly. I currently own an F1 Mainframe, a Vapor 5000, and a pair of Batwings. Packing meat tight to my Mainframe while still being able to strap my bags around the back of them has been extremely convenient. Knowing that I can be creative with the extra straps to balance my bag helps me pack as much as possible in a given trip.

Used on a Wyoming Mule Deer hunt , and it was fantastic for a long day with wide ranging temps. Carried more than I needed, including 2.5 liters of water and still had room. The pack fit great, as I am 6’5” and 256lbs, and I was worried about fit. I’m fired up to use this again!

Used the hook up kit to attach my Switchblade pack to an F1 mainframe. The hookup clips are easy to attach and secure once attached. Highly recommended.

I love the hook up kit design. This will allow me to hook up the meat tight to the frame and attach my backpack easily. 5 out of 5.

These worked great inconjunction with the field repair buckles for extending my existing straps on the F1 mainframe.

Great pack. Great workmanship. Love it.

This kit will put everything together for your system

Haven't used in the field yet, but grappled Switchblade to my mainframe and it works just fine.