Original U.S. Vietnam War 2.75” F.F.A.R. Flechette Warhead WDU-4A/A Cutaway on Display Stand - Inert Category_Receiver Top Cover It is marked size 6

It is marked size 6 7/8 on the support strap in the middle

We examined this and felt it was best left alone

From 1951 to 1962

This Japanese model 89 knee mortar round has a small Tokyo arsenal symbol punched into the side along with other markings

or the 10th Company

Original U.S. Vietnam War 2.75” F.F.A.R. Flechette Warhead WDU-4A/A Cutaway on Display Stand - Inert Category_Receiver Top Cover It is marked size 6Original Item. Only One Available. The 10 pound Flechette: WDU (4A A) was used primarily for antipersonnel operations. Contained approximately 2,200 twenty grain flechettes. The flechettes are released by a base mounted, fuze ignited (integral fuze) expulsion charge at rocket motor burnout. The fuzed weight of the flechette is 9. 3 pounds. Like all deactivated ordnance, this round is Not Available for Export. This is a great example of the American