Steyr AUG Ambidextrous Upgrade Stock

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German inventor TroubleShooterBerlin has completed version 2.0 of his Steyr AUG Ambidextrous Upgrade Stock. He has been working on this stock for years. Getting hold of a fully automatic Steyr AUG has half the problem, but he finally managed to obtain permission to use one earlier this year.
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If you have any questions I am sure TroubleShooterBerlin will answer them in the comments below.