Dissonance

Efate:  One of my favorite destinations in The Spinward Marches.

LBB Supplement 3 gives in year 1105.

Regina 0105 A646930 D N Non-industrial.  Imperial Way Station.

Starport A, 6,000 mi dia, Thin-tainted atmo, 60% surface water, billions of people, self-perpetuating oligarchy, no laws affecting weapons possession or ownership, above imperial average TL, Navy Base.  With a population code of 9, it's not supposed to be non-industrial...

LBB The Spinward Marches Campaign gives in 1111.

1705 A646930-D B Hi In 800lm K4 V

Starport A, 9,600km dia, thin-tainted atmo, 60% surface water, billions of people, self-perpetuating oligarchy, no laws affecting weapons possession or ownership, above imperial average TL, Navy Base and Way-Station.  High population.  Industrial.

GURPS: Traveller give in 1120.

Starport: Class V.  Way station and naval base.
Diameter: 6,339 miles.  Atmosphere: Thin oxygen-nitrogen, tainted by a low oxygen content.  Surface Water: 60%.  Climate: Cold.  Population: 8,373,000,000.  Government: Military (naval governor).  Control Rating: 4.  TL: 10.

Even considering the differences in game systems...  The government, law and tech levels have changed.

GURPS TL10 is Imperial average, a B or C in LBB terms.

Control rating of 4 which allows "hunting weapons like single-shot laser rifles, knives and other low-tech weapons.  That's more like Traveller law level of 5!

Efate being controlled by the military kinda-sorta fits self-perpetuating oligarchy...

Since the differences aren't in the same year, one could come up with why there was a crack-down on personal armaments.  It's just the place was so handy for the players to stock up on high-tech military small arms and get better warheads for the missile racks.