M249 | System Lock
The M249 | System Lock is a Mil-Spec light machine gun skin from The Chroma Collection, available in the Chroma Case with StatTrak support. Its finish applies a custom sci-fi design across the weapon body. The float range spans 0.00 to 0.80, meaning Factory New copies show sharp, clean sci-fi linework, while floats pushing toward the upper end begin revealing wear marks and surface grime that gradually break up the precision of the painted design across the receiver and barrel components.
Cheapest wear we have on this page. Pattern / float overpay is extra.
Chroma Case: (case+key) ÷ drop chance. Average, not a promise.
Ten of this rarity → Restricted in The Chroma Collection. Avg listed output $1.83.
Price History & Performance
Price by Wear
Cases & Drop Odds for M249 | System Lock
Probability of unboxing this skin per single case open, expected number of opens until you get one, and the case's expected return based on the current market value of every skin inside.
| Case | Drop Chance | Expected Opens | Open Cost | Market EV | EV vs Cost |
|---|---|---|---|---|---|
 Chroma Case | — | — | $9.94 | $0.65 | -93.5% |
Drop chance = official rarity odds ÷ size of that rarity pool inside the case. Market EV is the probability-weighted average of every skin's lowest current listing. "EV vs Cost" compares that EV against the case + key price — negative means opening loses money on average.
Where to Buy M249 | System Lock
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