WTT Kifaru duplex tactical 26”

[Peteyrajks]

WTT I have a Kifaru duplex tactical 26” frame. I would like to trade someone for a 24” frame. TIA

 

[Basecamphunt]

I think I have a 24" frame and I need a 26". How do I tell? Can you tell me what measurement to take and we can do this?