Accurate MK18 Build Parts List [MOD 0 & MOD 1]

For a complete MK18 Mod 0 and Mod 1 rifle build parts (excluding optics and sling). Each component below has been selected for high quality and close alignment with the MK18 platform’s specifications, while keeping each build around your $1500 budget give or take.

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dd mk18 with unity tactical aimpoint micro

MK18 Mod 0 Clone Build – Recommended Parts

Lower Receiver & LPK: Aero Precision AR-15 forged lower receiver (mil-spec) with a standard mil-spec lower parts kit for dependable fire control and authenticity.
Receiver Extension: Mil-spec 6-position buffer tube with carbine spring and an H2 buffer ensures reliable cycling for the 10.3″ barrel.
Stock: B5 Systems Enhanced SOPMOD Stock (Black) – a sturdy, Special Operations-style stock for comfort and cheek weld.
Pistol Grip: Standard A2 pistol grip, classic M4 style as used on service rifles.
Upper Receiver: Aero Precision AR-15 Stripped Upper Receiver (M4 feed ramps) – a solid base for the MK18 upper assembly.
Barrel & Gas System: Ballistic Advantage 10.3″ 5.56 Government Barrel w/ FSB (correct CQBR length with a fixed front sight), paired with a carbine-length gas tube for proper gas cycling.
Handguard: Troy Industries 7" Drop-In Battlerail (KAC RAS Clone) – authentic to the Mod 0 and robust for accessories.
Bolt Carrier Group: Toolcraft 5.56 NATO M16 Full-Auto Bolt Carrier Group (Phosphate, No Logo), a mil-spec BCG trusted for reliability.
Charging Handle: BCM Gunfighter Charging Handle Mod 4B (Medium) – stronger and easier to grip than a standard handle.
Muzzle Device: Knight’s Armament M4QD Flash Hider (NT4 mount, 5.56mm) – the classic Mod 0 flash hider.
Sights: LMT Adjustable Rear Sight (or Daniel Defense A1.5 Fixed Rear Sight) and a standard front sight (integral with FSB) – gives you the correct sight picture for a Mod 0 build.

MK18 Mod 1 Clone Build – Recommended Parts

Lower Receiver & LPK: Sons of Liberty Gun Works AR-15 Stripped Lower Receiver (Gen 2) with a CMMG AR-15 Lower Parts Kit (55CA6C5) for a reliable foundation.
Receiver Extension: Aero Precision Mil-Spec Carbine Buffer Kit (H2 buffer, spring, tube) for dependable function with the short-barrel upper.
Stock: B5 Systems Enhanced SOPMOD Stock (Flat Dark Earth/Coyote) – offers the SOCOM-approved stock design, commonly seen in Mod 1 builds.
Pistol Grip: Standard A2 pistol grip to maintain the military-correct appearance and feel.
Upper Receiver: Aero Precision AR-15 Stripped Upper Receiver (M4 feed ramps), perfectly paired with a free-float rail.
Barrel & Gas System: Sons of Liberty Gun Works 10.5" Combat Grade Barrel with a BCM Low Profile Gas Block (.750″) and carbine-length gas tube, mirroring the MK18 Mod 1’s proven setup.
Handguard: Daniel Defense RIS II MK18 9.5" Rail (FDE) – the correct quad rail for MK18 Mod 1, known for strength and plenty of mounting space.
Bolt Carrier Group: Bravo Company BCM M16 Bolt Carrier Group (MPI, Phosphate) – built to endure rigorous use.
Charging Handle: Radian Raptor Ambidextrous Charging Handle (Black), tough and ergonomic for suppressed fire and fast manipulations.
Muzzle Device: SureFire SOCOM SF3P-556-1/2-28 Flash Hider – a top-tier flash hider, compatible with SureFire SOCOM suppressors.
Sights: Knight’s Armament 99051 Flip-Up Micro Front Sight and Knight’s Armament 600m Rear Flip-Up Micro Sight – high-quality backup irons that are correct for the Block II/Mod 1 configuration.