Sentry Gun (BMC)

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Sentry Gun

MultiplatformFlash

File:BTD5M engineer sentry icon.png	Creates temporary sentry guns and deploys them nearby.

Portrait of Sentry Gun
File:BTD5F icon SentryGun.svg	Automatically creates sentry guns and deploys them on the ground nearby. Sentries shoot sharp steel pins at the bloons but only last a short time.

Tower		Path	Tier
Monkey Engineer		1	1

Upgrade cost		$500 (Multiplatform version) $450 (Flash version)
Prerequisites		City Level 5
Research cost		400
Research time		20 minutes
XP for researching		40

Fast Engineering →

Sentry Gun is the Monkey Engineer's path 1 tier 1 upgrade in Bloons Monkey City.