Granade Identification Please

[Jay321]

Hi,

I found this granade shell among some items of my father, who served in the Korean conflict, and my grandfather, who served in WWI. Both served in the US armed forces. Photos are attached. Note that there is also a numeral "4" (not shown in the photos) near the top and opposite RFX. The top hole is threaded, and the bottom hole is not threaded.

Would appreciate your help in identifying this, including whether it is "real" or replica, and whether it was once "live" or for training.

Thanks,
Jay

 

[Millsman]

American grenades are not my subject but I'd say it was a WW2 to Vietnam era practice grenade. A Mk II body I believe.

 

[sgtlynn]

That appears to be a real M21 body. Its the one that the cheap copies were modeled after, but yours appears to be real. Post WWII model, they were used for practice.

 

[Rifleman2]

That's the real deal.It originally looked like this.