Well supposedly this clip had a tendency to get jammed in the rifle.
Mr. Edgar. The cartridge clip was removed from CE-139 by Lieutenant Day of the Dallas Police Department on November 22, 1963 at the crime laboratory for the police department. Shouldn't a clip automatically fall out once the last cartridge has fed into the chamber?
Mr. Lutz. This rifle is designed to incorporate that feature so that the last cartridge is stripped out of the clip, then that allows the clip itself to fall or to drop from the opening that you see in the bottom of the box magazine. However, in many cases, and in this particular case, where we functioned the rifle, fed cartridges through it, we found this clip to stay in the rifle after the last round had been stripped and fed into the chamber. Because the lips or the edges of the clip many times will open up, they will spring against the walls on the inside of the box magazine and it will hang up in that area, and even though it is supposed to drop out, many times it will hang up in the box area.