Original U.S. WWII M21 Inert Practice Pineapple Fragmentation Training Hand Grenade Flintlocks His chief interest remained aviation

His chief interest remained aviation however

as were paratroopers

perhaps even 75 - 100 years older

There is also a flap covering the ammunition compartment

The set interior shows how well the training aid components are organized inside the wood box

Original U.S. WWII M21 Inert Practice Pineapple Fragmentation Training Hand Grenade Flintlocks His chief interest remained aviationOriginal Item: Only One Available. Totally inert according to BATF guidelines with a hollow body and inert fuse. This grenade cannot be converted to an explosive device and is not available for export. This is a great example of the M21 Practice Training grenade, an inert version of the iconic U. S. fragmentation pineapple grenade issued during WWII. The Mk II was standardized in 1920 replacing the Mk I of 1917. It was phased out gradually, the U. S.