MacCready for Action

 is an unmarked quest in Fallout 4.

Synopsis
The Sole Survivor swings by The Third Rail, only to interrupt a meeting between Gunners.

Walkthrough

 * The "quest" is an interactive cutscene that leads to meeting Robert MacCready. The former Gunner is harassed by Winlock and Barnes, who want him out of Gunner turf on pain of death. After MacCready blows them off, the player can hire him as a companion for 250 caps.