I called Kabar and asked, the gentleman told me they cannot sell because he believes that it is because of the serrations on the back, making it a double edged knife.
Thing is, there's no law AGAINST double edged blades that I can find, but then again I've only been reading the penal codes of CA yesterday, when I saw that the big brother won't be shipped to CA.
EDIT: here are the "generally prohibited weapon" categories of CA:
16590. As used in this part, "generally prohibited weapon" means
any of the following:
(a) An air gauge knife, as prohibited by Section 20310.
(b) Ammunition that contains or consists of a flechette dart, as
prohibited by Section 30210.
(c) A ballistic knife, as prohibited by Section 21110.
(d) A belt buckle knife, as prohibited by Section 20410.
(e) A bullet containing or carrying an explosive agent, as
prohibited by Section 30210.
(f) A camouflaging firearm container, as prohibited by Section
24310.
(g) A cane gun, as prohibited by Section 24410.
(h) A cane sword, as prohibited by Section 20510.
(i) A concealed dirk or dagger, as prohibited by Section 21310.
(j) A concealed explosive substance, other than fixed ammunition,
as prohibited by Section 19100.
(k) A firearm that is not immediately recognizable as a firearm,
as prohibited by Section 24510.
(l) A large-capacity magazine, as prohibited by Section 32310.
(m) A leaded cane or an instrument or weapon of the kind commonly
known as a billy, blackjack, sandbag, sandclub, sap, or slungshot, as
prohibited by Section 22210.
(n) A lipstick case knife, as prohibited by Section 20610.
(o) Metal knuckles, as prohibited by Section 21810.
(p) A metal military practice handgrenade or a metal replica
handgrenade, as prohibited by Section 19200.
(q) A multiburst trigger activator, as prohibited by Section
32900.
(r) A nunchaku, as prohibited by Section 22010.
(s) A shobi-zue, as prohibited by Section 20710.
(t) A short-barreled rifle or short-barreled shotgun, as
prohibited by Section 33215.
(u) A shuriken, as prohibited by Section 22410.
(v) An unconventional pistol, as prohibited by Section 31500.
(w) An undetectable firearm, as prohibited by Section 24610.
(x) A wallet gun, as prohibited by Section 24710.
(y) A writing pen knife, as prohibited by Section 20910.
(z) A zip gun, as prohibited by Section 33600.
There may have been a time that double edged= dagger or dirk in CA, but currently, it is:
"16470. As used in this part, "dirk" or "dagger" means a knife or
other instrument with or without a handguard that is capable of ready
use as a stabbing weapon that may inflict great bodily injury or
death."
By this definition, a screwdriver in your pocket can be construed as a dirk or dagger. Luckily, it is only illegal to conceal, and legal to openly carry:
"21310. Except as provided in Chapter 1 (commencing with Section
17700) of Division 2 of Title 2, any person in this state who carries
concealed upon the person any dirk or dagger is punishable by
imprisonment in a county jail not exceeding one year or in the state
prison.
21390. The
unlawful concealed carrying upon the person of any dirk
or dagger, as provided in Section 21310, is a nuisance and is subject
to Sections 18000 and 18005.
20200. A
knife carried in a sheath that is worn openly suspended
from the waist of the wearer is
not concealed within the meaning of
Section 16140, 16340, 17350, or 21310."
DISCLAIMER: I'M NOT A LAWYER! THIS WAS TAKEN DIRECTLY FROM
http://www.leginfo.ca.gov/calaw.html
If I am misinterpreting, correct me.
I posted a similar inquiry yesterday:
http://www.bladeforums.com/forums/showthread.php?t=816534