As an interesting alternative, I found (and purchased) this antenna on eBay...
https://www.ebay.com/itm/Radio-Mili...306754?hash=item2f38606e82:g:vAkAAOSwFOldtmEu
View attachment 33929
It appears to be the same antenna as the Chameleon Mil Whip, which Chameleon sells for $129. There are a few Chinese sellers offering this antenna for $40-50.
Interesting. Looks exactly like it. The length is the same. Even has the clear protector sleeves.