G'day Daniel,

Yep, the blade does lock open in classic Victorinox style.  Any tool component locks into place when open, and you need to partially open another component to release the lock.  If you have used a Victorinox before, its the same locking system.

G'day Oliver,

According to QLD police Category M Weapons are any knife designed or constructed so as to be used as a weapon that while the knife is held in one hand, the blade may be released by that same hand.
The reference to design and construction as a weapon is to ensure that this definition of a Category M Weapon does not apply to a knife specifically designed as a tool.  Any knife clearly designed as a utility knife is different from a knife designed as a weapon.

Based on that information I'd assume Swiss Multitools are not classified as Category M Weapons, but I do strongly suggest you clarify this with your local authorities prior to purchasing.

G'day Wendy,

The Nylon Heath 2-3 Layer 120mm is the best match for the Soldier One-Handed Knife.