I stumbled onto this while at DSA Inc.
Here’s the link to purchase ($450 but has a lifetime warranty) if you also absolutely must have one. I’ll be getting one for the tailgunner position in my Zombie Apocalypse / Mad Max armored vehicle made from a 1976 Cadillac El Dorado covered in rawhide with a 12 point rollcage and cowcatcher on the front. Actually the trunk in that car probably has room for TWO! Did the Shrike ever make it to market?