SKS (Siminov) ejection bug

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I used the search engine and couldnt find any similar post so i appologize if this is a repeat.

but i noticed that during the shell ejection animation sequence the gun ejects two empty casings.

i can supply screen shots if needed.

one casing is thrown up and to the right at about an 45 degree angle.
and the other is cast at about a 15 degree angle to the right.