SIG MCX .300 Blackout assault rifle
Table of contents

Assault rifle.300 Blackout (7.62x35mm)
MCX .300 BLK — assault rifle chambered for .300 Blackout (7.62x35mm). Ergonomics 48, recoil 127 vertical and 351 horizontal, 800 rounds per minute. Fire modes: single, full auto.
Stats without attachments
| Stat | Value |
|---|---|
| Type | assault rifle |
| Caliber | .300 Blackout (7.62x35mm) |
| Ergonomics | 48 |
| Vertical / horizontal recoil | 127 / 351 |
| Rate of fire | 800 RPM |
| Fire modes | single, full auto |
| Effective range | 100 m |
| Weight without attachments | 0.4 kg |
| Mod slots | 5 |
| Flea Market price | 101,957 ₽ |
In-game description
The .300 Blackout MCX line, designed and manufactured by SIG Sauer, is available in both semi-automatic and automatic versions and features a short-stroke gas piston system, which is inherited from the earlier SIG MPX submachine gun. The .300 Blackout ammo and the MCX are compatible with all AR-15 magazines.
Which ammo to take
Best by penetration out of 6 options in .300 Blackout (7.62x35mm) caliber. The full list is on the caliber page.
| Ammo | Damage | Penetration | Armor damage | Velocity | Flea Market |
|---|---|---|---|---|---|
| 51 | 48 | 65 % | 635 m/s | — | |
| 58 | 43 | 57 % | 725 m/s | — | |
| 54 | 36 | 40 % | 442 m/s | 1,308 ₽ | |
| 60 | 30 | 36 % | 605 m/s | 531 ₽ | |
| 72 | 20 | 25 % | 723 m/s | 205 ₽ | |
| 90 | 14 | 18 % | 853 m/s | 139 ₽ |
Quests with this weapon
- Import Control (Mechanic)
- What’s Your Evidence? (Peacekeeper)
Weapons on the radar
- The enemy marker is labeled with the weapon they are carrying. The same is shown in the threat list next to the distance and height.
- Weapons in loot are labeled with the price and colored by value tier — you can tell right away whether it is worth going for.
- Aimlines and the “aiming at you” alert: you can see who has you in their sights.
The radar map opens from a link in any browser: on a phone, tablet, laptop or second monitor. You can also share it with friends from your squad.

Questions and answers
What caliber is MCX .300 BLK?
Assault rifle chambered for .300 Blackout (7.62x35mm): the game has 6 types of these rounds.
What is the best ammo for MCX .300 BLK?
By penetration — AP (penetration 48, damage 51), by damage — Whisper (90). Against class 4 armor you need penetration of 40 or higher, class 5 — 50 or higher, class 6 — 60 or higher.
How much does it cost?
About 101,957 ₽ on the Flea Market per the price snapshot; the trader base price is calculated from 21,300 ₽.
What are its base stats?
Ergonomics 48, vertical recoil 127 and horizontal recoil 351, 800 rounds per minute, fire modes: single, full auto. These are figures without attachments — mods change them.
Same caliber
Other: assault rifles
HK 416A5 · AUG A1 · Steyr AUG A3 5.56x45 assault rifle (Black) · Steyr AUG A3 5.56x45 assault rifle · FN SCAR-H 7.62x51 assault rifle (FDE) · FN SCAR-H 7.62x51 assault rifle · all