The old Kabars were not full tang.

I drop tested a Buckmaster from 6 feet onto concrete and it broke into 3 pieces. It was owned by a Navy SEAL and we compared my Gerber BMF and his Buckmaster. My Gerber BMF did not break.

Putting a knife in a vise and hitting it with a sledgehammer is about the only thing I did not do. I pounded knives into a wood fence post and then stood on the handle, jumping up and down, I pounded the BMF into a crack in some rocks and then hung three grown men on a rope around the handle, I stabbed them through car doors and then tested sharpness. That was all testing, and my Gerber BMF and Cold Steel Recon Tanto both held up.

The Kabars I broke and bent in the field were from prying and cutting through doors, digging or opening Soviet type ammo cans and boxes.

I never broke a Buck folder, they were pretty tough. But I never tested it either.