M20: The M20 uses a new, high-velocity armor-piercing round developed to both counter the proliferation of advanced body armor among rebel forces and increase the amount of kinetic energy dumped into energy shielding. It features a top-mounted box magazine, retractable stock, folding foregrip, smart-link electronics, and compatibility with all UNSC weapon accessories. Well-balanced, the M20 can be fired one-handed with the stock retracted.
M7: Cheap, efficient, compact, and extremely lightweight, hundreds of thousands of M7 SMGs remain in service with paramilitary police units, Insurrection guerrillas, and militia forces throughout the human sphere. Though its M443 5x23mm caseless telescoped ammunition is not used by other UNSC weapons, it is a common round in the civilian market and relatively easy to manufacture.