This tool is used to remove the barrel from a bulged AK trunnion and install a barrel into a bulged trunnion that has been riveted to the receiver. The tool kit consists of the following parts: Left and Right Jaws, Bolt Plate, Driving Bolt, Brass Ram, threaded rods, and Nuts. (The PSL and Yugoslavian AK are examples of bulged style trunnions.)
If using this tool with a longer barrel such as a PSL you will need to purchase 3/8-16 x 36" threaded rods, these threaded rods can be found in most hoe improvement stores. Note: This tool is the bulged barrel tool and is used for AK rifles with a bulged trunnion. This tool cannont be used with standard trunnions.
The front lips on the jaws of the tool are meant for location purposes only, they do not hold the receiver in place while using the tool. The receiver is held in place with clamping pressure, which is achieved with a vise that has parallel jaws and adequate rigidity to clamp the receiver in place. If the trunnion is slipping in the jaws proper clamping pressure is not achieved or your barrel is seized to the trunnion.
The ideal interference fit between the barrel shank OD and trunnion bore ID is .0005" to .001".
.0015" is the maximum interference fit. A larger interference fit could damage the barrel.
