What does Coach Guns do in AoE3?

Gives: DEHC Shotgun Messengers Shadow; Ships 3 Bandido; Ships 3 Cuatrero. The game says: "Ships a few Outlaws and gives Trading Posts a powerful charged ability that inflicts area damage."

Home City card

Coach Guns

Coach Guns (tech ID DEHCREVMXShotgunMessengers) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Fortress Age. Effect: Gives: DEHC Shotgun Messengers Shadow; Ships 3 Bandido; Ships 3 Cuatrero. It hands over about 720 resources' worth.

Quick answers (3)

Which civilizations have the Coach Guns card?: Mexicans.
What does Coach Guns do in AoE3?: Gives: DEHC Shotgun Messengers Shadow; Ships 3 Bandido; Ships 3 Cuatrero. The game says: "Ships a few Outlaws and gives Trading Posts a powerful charged ability that inflicts area damage."
What is the tech ID of Coach Guns?: DEHCREVMXShotgunMessengers.

Ships a few Outlaws and gives Trading Posts a powerful charged ability that inflicts area damage.

What it does

Gives: DEHC Shotgun Messengers Shadow
Ships 3 Bandido(unit)
Ships 3 Cuatrero(unit)

1 further effect (interface, visuals or AI) not listed.

What it hands over

3 × Bandido110 each
3 × Cuatrero130 each

Total ≈ 720 resources — units at their train cost, crates and animals at what they hold.

Cost: 1
Sent from: III
Times it can be sent: 1
Game ID: DEHCREVMXShotgunMessengers

In these decks

MexicansIII×1

Source: techtreey.xml and the Home City files, AoE3: DE 100.19.18309 (build 25040513).