Jason, I never took my handle apart (which can be done to remove the lead weights), so I couldn't tell you for sure if the tang goes for the length of the handle.
Usually, tang lenght becomes an issue when you are concerned about breakage. Breakage which would be caused by lateral forces upon the blade. Let me just say this, full tang or not, the blade on my Boker looks like it would not be able to withstand much lateral force. It is a rather thin blade that is tapered and ground on both sides. I'm almost certain that General Applegate designed this knife solely for stabbing and cutting in hand combat, and not for survival uses such as chopping and prying. Hope this helps.
Stay back! or I'll...OUCH...cut myself.