The 4 bore with his initials and 001 is the longer 24" barreled one with the darker color case hardened receiver. It has less engraving, high gloss wood and is left handed. Kyle would have been 17 on this December 27th. I miss him all the time, but especially when I am shooting. He was always there with me to shoot and never missed a gun show. Definatly happier times for me.