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My Bersa Thunder rear sight is "drift adjustable." Take a brass rod, smaller than the side of the sight. Cushion the gun on a solid surface, protecting it with a rag for padding. Holding the brass rod firmly against the side of the REAR sight, tap it with a hammer. Make SURE you know exactly "where" the sight is, before you start "whacking" so you'l know when it moves. Some are tighter than others, but that's how the sight is adjusted. Do NOT use a steel punch! It will damage or "swage" the side of the sight, then you'll have a whole now problem. "THINK" before you move the sight, so you'll correct the problem. Take your time, go slow & easy.....
Last edited by 22plinker; 10-24-2008 at 12:57 AM.
Reason: spelling
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