From the NFHS in regards to the Stinger Bat Company, Missile II Metal Bat:

“The National Collegiate Athletic Association (NCAA) has advised the NFHS that on the basis of
the performance testing by Washington State University Sports Science Laboratory, the BBCOR decertification process has been implemented for the Matte Military Green bat (see preceding page) with Black and Gold highlights (color) 33” model Stinger Bat Company Aluminum Missile II bat. The model number is MISL2233. The bat will be removed from the BBCOR Approved Bat list that is housed on the Washington State University Sports Science Laboratory website.

Since the Missile II no longer has the BBCOR designation, effective immediately, this bat (33"
length Stinger Bat Company Missile II aluminum bat) should be considered a non-compliant bat
pursuant to NFHS Baseball Rules 1-3-2d and 7-4-1a."