9 is a sub-machine gun designed by a private venture of Floro International Corporation (FIC) based in Tanay, Rizal Province in the Philippines.

Though several Philippine enterprises are involved in the manufacture of small arms, submachine gun production is mainly limited to copies of foreign designs such as the MAC-10 and the KG-9 assembled in clandestine workshops for sale in the black market.

There are few openly marketed indigenous submachine gun designs owing to the availability and popularity of imported weapons such as the Israeli Uzi and the H&K MP5.

Initial responses were favorable and some sales were made, particularly to the AFP's Anti-Crime Task Force and the Philippine Navy's Special Warfare Group.

The external appearance of the gun shows a striking resemblance to the Federal Engineering XC series of semi-automatic "assault rifle lookalike" carbines (marked 220, 450 and 900; in .22LR, .45 ACP and 9mm Para calibers respectively) produced in the mid-1980s in the US; approximately 20 years before the emergence of the FIC MK 9 on the market.

Another usable add-on to the design is the Picatinny rail, allowing to easily mount scopes and other equipment, which was in the original XC troublesome.