Classic Traveller's Book 1: Characters and Combat provides a surprisingly complete collection of low-tech arms. Weaponry includes a good range of TL0-3 weapons, from spears to muskets, ideal for low-tech lost colonies and to forays into medieval and fantasy role-playing. Furthermore, Supplement 4: Citizens of the Imperium provides bows and crossbows, including the inaccurate but rapidly firing Repeating Crossbow. Book 3: Worlds and Adventures also provides common adventuring gear, such as torches.
Elven Chain, TL1, Cr2000. A suit of particularly high-quality and lightweight Chain armor. Treat as
Mesh-1, weighing only 8000 grams. At the Referee's option, it may even count as regular Mesh against modern (TL3+) weapons.