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Mechanic

Gunsmith Master - Part 9

MechanicLevel 40+28,000 XPWiki

Build plan

Sources checked 25 Sept 2026

Gunsmith Master - Part 9: M4A1 / REAP-IR. Start with the standard weapon listed and follow the modifications in order.

Before you buy

  • Check which parts you already own. Item links keep your selected mode for prices and offers.

  1. M4A1 / REAP-IR

    Starting weapon: Colt M4A1 5.56x45 assault rifle. 14 parts in the modification list. Keep standard parts that are not replaced.

    See parts and assembly
Sources and update

Instructions written for RaidSignal. The date records a source review, not an in-raid test.

What you have to do

  1. 1

    Modify Colt M4A1 5.56x45 assault rifle with durability at least 60, ergonomics at least 40, magazine capacity at least 60, recoil sum at most 280 and weight at most 5 kg

    Required amount / progress: 1

    Colt M4A1 5.56x45 assault rifle
    BASE WEAPONColt M4A1 5.56x45 assault rifle
    REQUIRED ATTACHMENTS (3)
    THRESHOLDS
    • Recoil sum ≤ 280
    • Weight ≤ 5 kg
    • Durability ≥ 60
    • Ergonomics ≥ 40
    • Magazine capacity ≥ 60

Rewards

Comes after

Opens up

Complete build: what to buy

The starting weapon and every modification for the guide’s configuration. Open an item for prices and offers.

Colt M4A1 5.56x45 assault rifle

List updated 25 Sept 2026

1. START WITH THE COMPLETE STANDARD WEAPON

Colt M4A1 5.56x45 assault rifleColt M4A1 5.56x45 assault riflePeacekeeper LL3×1

2. BUY AND FIT THESE PARTS

3. ASSEMBLY ORDER

  1. Fit the 10.3-inch barrel with the Lo-Pro gas block. Install the MK10 handguard, its 10-inch rail and RK-1.
  2. Use the KAC QDC mount for the FDE NT4. Mount REAP-IR on DLOC-IRD with its eyecup, then fit the MIAD grip, DS150, B.A.D. lever and MAG5-60.

Before handing in

Fit the listed parts, replacing the factory parts where needed. Keep the remaining standard parts. Empty the chamber and magazine, and check the task’s durability and stat requirements.

Recoil sum
≤ 280
Weight
≤ 5 kg
Durability
≥ 60
Ergonomics
≥ 40
Magazine capacity
≥ 60

Example build from Escape from Tarkov Wiki ↗. Other configurations can also meet the requirements.