You ain't a firing squad, you piece of shit.
5 seconds sound clip from the Platoon movie soundboard.
You can hear this line at 00:54:08 in the Blu-ray version of the movie.
Quote context
[...]
- I shot her down, VC! I shot her down, VC!
- What the fuck do you think you're doing?
- Stay out of this, Elias. This ain't your show.
- You ain't a firing squad, you piece of shit.
- Chief! Chief, tear his fucking head off!
[...]