Part name: Operating Rod

Part Function: The Operating Rod serves a number of critical functions. The handle on it is used to cock the M1 Garand Rifle. When the oprod is released it pushes the bolt forward to strip and chamber a cartridge. The oprod also serves as a spring guide for the Operating (main) Spring. It also serves as the 'piston' which rides inside the gas cylinder and is thrust rearward during the firing of the weapon setting in motion the feeding and chambering of a new cartridge. The bolt is moved by the Op Rod and rides on a detent near the handle.

Other items of interest in this photograph: (above) The KA-BAR USMC Combat Knife was well known by many of our troops as it was extremely robust and well made. The handle was made of leather 'washers' and the blade's steel was second to none in my opinion. The original KABARs like the one pictured here will take a very nice edge and can keep it for a long time.

Special Notes: The Op Rod is bent slightly by design. Oprods may be of the cut or uncut variety.

This photograph shows the difference between 'cut' and 'uncut' operating rods. Note in the background that the charging handle comes into contact with the piston part of the oprod in a squared off fashion while the picture in the foreground shows a circular 'cut'. The relief cut is made to relieve stress on the metal at the point of angular connection. This cut is especially critical when firing grenades so as not to crack the operating rod.

Oprod Handle End. The 'grip' used to charge the weapon.

Other items of interest in this photograph: A reproduction of an M1 Maintenance Manual

Oprod Mid Section. This is the area where the Operating Rod Spring rides. Note the relief cut in this operating rod.

Other items of interest in this photograph: A reproduction Hawaiian Newspaper for December 7, 1941.

Oprod Piston End. This is the part of the Oprod that rides in the gas cylinder and is pushed rearward by the gasses vented from the barrel upon weapon discharge.

Other items of interest in this photograph: A Clip of 30-06 rifle cartridges.

Oprod shown in final assembly.

This page was last updated on: March 14, 2002