The SMG Mk II is the Mk II upgrade of the standard SMG, converted at any Weapon Workshop. The upgrade lifts damage per shot from 22 to 25 and adds roughly 10 percent to the fire rate, plus access to Mk II ammo: tracer, incendiary, hollow point, and FMJ rounds. It is one of the better handling SMGs in GTA Online and one of the few Mk II guns you can fire from a vehicle.
Cost breakdown, as of July 2026: the base SMG is $7,500 at Ammu-Nation and the conversion is $85,500, so $93,000 gets you the gun. A sensible full build adds hollow point rounds ($43,550 mag, research required), the 60-round extended clip ($18,300), and the heavy barrel ($42,000), which brings the practical total to about $197,000. Call it $200,000 all in.
Is it worth it? Situationally. On foot, any Mk II assault rifle kills faster at every range past point blank, so the SMG Mk II is not a primary. Where it earns its keep is drive-bys and suppressed play: it is controllable one-handed from a bike or car window, and with a suppressor plus hollow points it quietly deletes unarmored NPCs during stealth heist setups.
The recommended loadout is hollow point rounds, extended clip, suppressor, and the heavy barrel if you skip the suppressor. Hollow points shred the unarmored enemies that make up most mission NPCs, and the 60-round clip covers the SMG's fast ammo burn.
For money making, it is a quality-of-life pickup for Cayo Perico stealth and bike-based sale missions rather than a core investment. Buy it after the Heavy Sniper Mk II, Combat MG Mk II, and a Mk II rifle.
