Question: What gun was used by Pollack's director in Westworld?

Knowledge 1: Pollock (film)
Marcia Gay Harden won the Academy Award for Best Supporting Actress for portraying Lee Krasner, Pollock's wife. Ed Harris received an Academy Award nomination for Best Actor for his portrayal of Pollock. The film was a long-term personal project for Harris based on his previous reading of Pollock's biography.Ed Harris’s father had noticed that he resembled Pollock. [SEP] Knowledge 2: Westworld (TV series)
Nolan and Joy serve as executive producers, along with J.J. Abrams, Jerry Weintraub, and Bryan Burk. The first season was broadcast between October 2 and December 4, 2016; it comprised ten episodes. In November 2016, HBO renewed the series for a ten - episode second season, which was broadcast from April 22 to June 24, 2018. Westworld's debut on HBO had the network's highest viewership ratings for a premiere since the first episode of True Detective in 2014. Moreover, the series ranks as the most - watched first season of any HBO original series. On May 1, 2018, Westworld was renewed for a third season.
Knowledge 1: Westworld (TV series)
Nolan and Joy serve as executive producers, along with J.J. Abrams, Jerry Weintraub, and Bryan Burk. The first season was broadcast between October 2 and December 4, 2016; it comprised ten episodes. In November 2016, HBO renewed the series for a ten - episode second season, which was broadcast from April 22 to June 24, 2018. Westworld's debut on HBO had the network's highest viewership ratings for a premiere since the first episode of True Detective in 2014. Moreover, the series ranks as the most - watched first season of any HBO original series. On May 1, 2018, Westworld was renewed for a third season. [SEP] Knowledge 2: Anti-aircraft warfare
However, the problem of deflection settings — 'aim-off' — required knowing the rate of change in the target's position. Both France and UK introduced tachymetric devices to track targets and produce vertical and horizontal deflection angles. The French Brocq system was electrical, the operator entered the target range and had displays at guns; it was used with their 75 mm. The British Wilson-Dalby gun director used a pair of trackers and mechanical tachymetry; the operator entered the fuse length, and deflection angles were read from the instruments.
Knowledge 1: Westworld (TV series)
Nolan and Joy serve as executive producers, along with J.J. Abrams, Jerry Weintraub, and Bryan Burk. The first season was broadcast between October 2 and December 4, 2016; it comprised ten episodes. In November 2016, HBO renewed the series for a ten - episode second season, which was broadcast from April 22 to June 24, 2018. Westworld's debut on HBO had the network's highest viewership ratings for a premiere since the first episode of True Detective in 2014. Moreover, the series ranks as the most - watched first season of any HBO original series. On May 1, 2018, Westworld was renewed for a third season. [SEP] Knowledge 2: QF 3-pounder Hotchkiss
The QF 3-pounder Hotchkiss or in French use Canon Hotchkiss à tir rapide de 47 mm were a family of long-lived light naval guns introduced in 1886 to defend against new, small and fast vessels such as torpedo boats and later submarines. There were many variants produced, often under license which ranged in length from 32 to 50 calibers but 40 caliber was the most common version. They were widely used by the navies of a number of nations and often used by both sides in a conflict. They were also used ashore as coastal defense guns and later as an anti-aircraft gun, whether on improvised or specialized HA/LA mounts.

Answer: LeMat revolver