Fact Sheet: United States Imposes Additional Costs on Russia for the Poisoning of Aleksey Navalny - United States Department of State
Russian Ammunition imports are mentioned.
This will not help the supply situation.
http://www.dia.mil/publicaffairs/Foia/smcal_vol1.pdf (10mb download. HT to delloro for updated link.)
http://www.bordingl.com/zfondelli.htm (Non English)