This video clarifies the distinction between the Sons of Liberty Gun Works M89 Drivelock rail system and the Hodge S-Lock rail system. The presenter emphasizes that these systems are not interchangeable, despite a common online misunderstanding. The M89 Drivelock utilizes independent wedges that create two force vectors, pushing the rail back and up into the upper receiver for a secure lock-up, a fundamentally different mechanism than the S-Lock.
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