Related Rule
Russian Federation
Practice Relating to Rule 79. Weapons Primarily Injuring by Non-Detectable Fragments
The Russian Federation’s Military Manual (1990) prohibits the use of weapons that may cause superfluous injury or suffering and refers to the 1980 Protocol I to the Convention on Certain Conventional Weapons. 
Russian Federation, Instructions on the Application of the Rules of International Humanitarian Law by the Armed Forces of the USSR, Appendix to Order of the USSR Defence Minister No. 75, 1990, § 6.
The Russian Federation’s Regulations on the Application of IHL (2001) states: “The following shall be prohibited to use in the course of combat operations: … any weapons the primary effect of which is to injure by fragments which in the human body escape detection by X-rays.” 
Russian Federation, Regulations on the Application of International Humanitarian Law by the Armed Forces of the Russian Federation, Ministry of Defence of the Russian Federation, Moscow, 8 August 2001, § 9.