Buffer Tube (Receiver Extension): The buffer tube is the cylindrical tube that attaches to the lower receiver and houses the buffer and recoil spring.
Buffer: The buffer is a weighted component that moves back and forth within the buffer tube. It helps absorb recoil and ensures proper cycling of the firearm.
Carbine Recoil Spring: The recoil spring provides the necessary tension to push the buffer back into battery after each shot.
Castle Nut: The castle nut secures the buffer tube to the lower receiver.
End Plate: The end plate is attached to the rear of the lower receiver and is used to secure the castle nut.
Carbine Buffer Tube Spring: This spring provides additional support and tension for the buffer assembly.
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