Using an AK for clearing would be like using a sledgehammer to swat a fly!
Seriously tho, an AK is a heavy-duty, axe-like chopper, not meant for clearing or machete duties. Tom Holt once said that too much energy would be expended stopping the cut. Furthermore, springly vegetation has a tendancy to deflect cuts in a totally different direction with all the energy directed with it! Such a cut would be hard to stop embedding you prized khuk into you knee or foot!


Anyhoo, my personal recommendation would be to use any of the slim, light, sword-like khuks, such as a light 20" Siru, a GS, any length Kobra, a Chit or Chainpuri, etc.
I personally have used such khuks in clearing an ivy infestation and bamboo...
If cost is a limiting factor, Valiant Trading Company would be the other option. Their range of Survival Goloks are a nice blend of both worlds, being beefier than a cheapo "whippy" machete, but lighter and a bit thinner than a HI...