In the Line of Duty 6: Forbidden Arsenal - 地下兵工廠 (1991)

• Movie: In the Line of Duty 6: Forbidden Arsenal
• Chinese: 地下兵工廠
• Director: Cheng Siu-Keung
• Producer: Stephen Shin Gei-Yin
• Cinematographer: Ko Chiu-Lam
• Release Date: 1991
• Runtime: 127 Minutes
• Language: Cantonese
• Country: Hong Kong 
• Subtitles : English | Chinese
• Cast: Cynthia Khan, Waise Lee Chi-Hung, Garry Chow Ging-Yeung, Robin Shou Wan-Bo, Rachel Lee Lai-Chun, Do Siu-Chun, Hui Siu-Hung, Tse Wai-Kit, Phillip Kwok Chun-Fung, Ridley Tsui Bo-Wah, Leung Gam-San, Lee Sam, Kong Long , Ho Wing-Cheung, Lau Shung-Fung, Lee Diy-Yue, Choi Kwok-Ping, Tam Wai-Man