RedCardinal
Member
The S&W PC 5906 magwell will not fit a standard 3rd Gen 5906 or 4006 without some precise milling cuts to the grip backstrap of the frame. See photos 1, 2, 3 & 4 comparing the PC frame and the standard frame. If you have a PC 3566, 4004 or 5906, the only fitting required is to fit the tabs on the magwell into the space between the grip pin holes and drill out holes in the tabs for the grip pin. This requires precise skill inorder to keep the magwell tight against the frame.
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