all I can call it is the tange that sticks up in the center of the internal mag. in the center, came off the other day. this weapon is for our Legion rifle squad for funerals., I took the weapon apart and was able to put it back on but it is really loose, I know it has had alot of use over the years but my question is ,is it suppose to be loose fitting . this is the vertical part that sticks up and I believe it kicks the stripper clip out when empty. I have been nominated (drafted) as the armorer because I am the youngest (59) person in the legion that can take down, clean, and put back together the M1 Garand. the rest are either a bit older or afraid to try working on them.