This article makes no mention of Russian sabotage, but the Russian military has been caught sabotaging similar munitions-manufacturing facilities in Europe. Incompetence might be sufficient to explain the failure, but it also seems reasonably likely that there was an undetected sabotage operation or two mixed in to compound the problems.

Oh dear it is the Russians again. They are to blame for everything.

Are they to blame for the US Army's acquiescence to Repkon's refusal to allow them to see production lines in operation, or are Repkon manufacturing artillery shells for Russia too?