hold a gun to sb's head

hold a gun to sb's head AND put a gun to sb's head (to use threats to force someone to do what you want; exert pressure on someone) — пристать с ножом к горлу; заставлять, вынуждать; ~ брать измором

Example 1: Management are holding a gun to our heads. If we don't behave we'll lose our jobs. (thefreedictionary.com)

Example 2: No one held a gun to her head and made her live with the guy - she made that bad decision all on her own. (thefreedictionary.com)

Example 3: How could I refuse when she was holding a gun to my head? (thefreedictionary.com)

Related vocabulary
[twist sb's arm]
at gunpoint
[hold one's feet to the fire]

at the point of the bayonet /sword
1) силой оружия, насильственно, огнём и мечом, "на штыках"
2) под дулом пистолета, под давлением, под нажимом (тж. at gun's point)