Githyanki Crossbow is an uncommon, lightly enchanted (+1) variant of the Heavy Crossbows family of weapons. It is a martial ranged weapon that's wielded with both hands.
This heavy crossbow is fashioned from a curious, tensile metal that doesn't seem to be native to Faerûn.
Properties
- Damage
1d10 + 1 (2~11) + Dexterity modifier 
Piercing damage - Details
Heavy Crossbows 
Rarity: Uncommon
Enchantment: + 1
Two-Handed- Dippable
Range: 18 m / 60 ft
Weight: 8.1 kg / 16.2 lb
Price: 85 gp 
UID
WPN_GTY_HeavyCrossbow_AUUID
b674ea52-2b6f-4977-b6d5-98810304a98b
Weapon actions
If you have proficiency, equip in main hand to gain:
Piercing Shot (
)- Deal regular damage and possibly inflict
Gaping Wounds which cause extra damage on attacks., and 
Brace (
)- Spend 6 m / 20 ft of your movement. For the rest of your turn, roll ranged damage twice and use the highest result.
Where to find
Dropped by Raider Chost and Raider Zastri of the Githyanki Patrol in the Mountain Pass area of The Risen Road (X:-137, Y:558).