Though weapons and armor can be worth any bonus — in Domino Writing-style USR, they’re +1 (Light) to +3 (Heavy) — some equipment is typically bigger and badder than others. Here’s a weapon catalog to get your hero armed and dangerous, of archaic weapons. Look for guns and armor soon. This list of weapons is taken from an old role playing game I wrote years and years ago, which had a few good ideas in it, I think!
No bonus: kicks, punches, headbutts
Martial arts training offers a bonus of +1 (ninja mook) to +3 (black belt)
+1 (Light) weapons: Slingshot
+2 (Medium) weapons: Crossbow, longbow
+3 (Heavy) weapons: Composite bow
+1 (Light) weapons: Dagger (knife), cavalry saber, fencing sword (rapier, epee)
+2 (Medium) weapons: Hatchet (pick, tomahawk), laser sword, longsword, polearm (scythe, halberd), scimitar, short sword (cutlass, machete), spear
+3 (Heavy) weapons: Battle axe, chainsaw, greatsword, pike (lance)
+1 (Light) weapons: Brawling weapons (brass knuckles, chain, large rock), club (baseball bat, cricket bat, baton), staff
+2 (Medium) weapons: Flail, mace, hammer
+3 (Heavy) weapons: Great hammer (maul)
Stun baton: This is a special weapon, which like other clubs has a +1 bonus to attack, but if it hits, the opponent loses d3 turns in combat.
Martial Arts weapons
+1 (Light) weapons: Caltrops, sai, throwing star (shuriken)
+2 (Medium) weapons: Katana, nunchaku
P.S.: since you’re looking for it to complete the set, the bo is a staff (blunt +1 weapon).