3.7K views · 51 reactions | Decoding a Master Lock 7640D Combination Lock part 1 #lockpickingtools #locksport #security #military #locksmith #fbreels #fbviralreels | Lock Picking V | Facebook
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3.7K views · 51 reactions | Decoding a Master Lock 7640D Combinatio…
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FacebookLock Picking V
We put the classic Master Lock 5400 series combo box under the microscope and decoded it step-by-step. No force, no destruction—just technique. This video breaks down how the internal wheels behave, what to feel for, and how a simple decoding method can bypass most common combination lock boxes. If you’re learning lockpicking, physical security, or just want to understand how these mechanisms really work, this one’s for you. ⚠️ For educational and security testing only. Always practice on locks
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We put the classic Master Lock 5400 series combo box under the micro…
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