1956 – Type 56 Spike Adopted in China

The one on the right is the “Chisel Tip”
The edge on the Chisel Tip is cut at a downward angle from the top down, while the other two (on the left) are cut at angles from the sides

Chisel on the right

These connect to a stud under the front sight on the rifle. The screw holds the other locking sleeve onto the bayonet (compressing the spring)