I have no idea but our sheriff assistant has a full auto mini 14 sitting next to his full auto M14 in his truckWhat would be necessary to convert a Mini14 to pump action? It appears that the configuration of the piston(?) lends itself to a conversion, but some means of attaching a handgrip to the piston along with a means of support for the handgrip would be necessary. Of course, the gas port would be blocked.
Why? A converted Mini14 would no longer be a semi-automatic. From personal limited experience, my time to back on target with other pump guns is not noticeably longer than with semi-automatics.
Thanks in advance.