Wiktionary
prep.phr. Under coercion by someone with a firearm.
Wikipedia
At Gunpoint is an American 1955 Western film directed by Alfred L. Werker and starring Fred MacMurray, Dorothy Malone and Walter Brennan.
Usage examples of "at gunpoint".
Sodarra explains (at gunpoint) that Vellam (whose space includes the Yavin system) is envious of Vader's ties to the Emperor and wants to take him out.
The Ministry of Defense shoved those kids onto my ship at gunpoint and told me to whistle for the cost of transporting them.
And if someone were forcing you out into the woods at gunpoint, why would you take your purse with you?
If we can get the right help, simply to hold the control-room crew at gunpoint if we have to, I suppose, and force them to send us back where we came from.
Still focusing on Amy, she led John at gunpoint across the deserted parking lot.
No one knew what was going on inside his head except that he'd ordered Swigart to keep the surviving civilians together and at gunpoint.
Anyone you were robbing at gunpoint was just as likely to turn over the money whether you said your name was Smith or Jones, and the law would take far longer as they tried to figure out who'd done it.
Robbing a hack at gunpoint isn't exactly in the same league as swallowing goldfish.
He asked to see their leader and was ushered, at gunpoint, to Rolvag without much ado.