AR-47 7.62x39 18" Upper with 15" M-LOK Rail – Mid-Length | Moriarti Arms

AR-47 Line

AR-47 7.62x39 18" Upper Assembly / 1:10 Twist / Mid-Length Gas / 15" M-LOK Free Float Rail – Moriarti Arms

For shooters looking to push the ballistic limits of the 7.62x39 cartridge, the Moriarti AR-47 18" Upper Assembly offers increased velocity, flatter trajectory, and enhanced accuracy—perfect for hunting, distance shooting, or tactical builds.

This upper features a premium 18” 4150 CMV barrel with 1:10 twist, nitride coated for longevity and corrosion resistance. The mid-length gas system provides smoother recoil impulse and improved cycling over traditional carbine systems. Threaded 5/8x24 and finished with a triport muzzle brake, this setup delivers performance and control.

The 15" M-LOK free float rail gives you ample space for bipods, lights, grips, or optics while preserving accuracy by preventing barrel deflection. The forged 7075-T6 A3 upper receiver includes forward assist and dust cover, precision-machined and hardcoat anodized for durability.

Note: Handguard may vary slightly in appearance depending on stock. Quality and fitment remain consistent.

Technical Specs

• Caliber: 7.62x39

• Barrel Length: 18"

• Twist Rate: 1:10

• Barrel Material: 4150 CMV

• Barrel Finish: Nitride coated

• Gas System: Mid-length

• Gas Block: Low-profile steel, .750 diameter

• Muzzle Thread: 5/8x24

• Muzzle Device: Triport brake, nitride finish, crush washer included

• Receiver: Forged 7075-T6 aluminum, black hardcoat anodized, A3 flat-top

• Handguard: 15" M-LOK free float rail, aircraft-grade aluminum

• Bolt Carrier Group: Not included

• Charging Handle: Not included

Compatibility

• Compatible with mil-spec AR-15 lower receivers

• Ideal for use with enhanced 7.62x39 firing pin and BCG (available separately)

For optimal performance, pair this upper with the Moriarti 7.62x39 Enhanced Firing Pin  for reliable ignition and cycling.