How To Install or Replace a Fixed Neck on B Series or O Series Curved Handle BTB Platform Guns

To remove neck, remove the nut insulator.
Using a wrench, rotate lock nut counterclockwise. Rotation will free neck from end fitting.
To install the neck, perform the above instructions in reverse order and tighten lock nut to 16 ft.-lbs. (21.7 Nm). Be sure nut insulator is in place.
Liner may need to be changed if switching to a neck of a different bend, angle or length.

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