AR-15 10.5" 5.56 NATO SBR – Moriarti Custom Series MA-15 BLACKBOX

SBR

AR-15 10.5" 5.56 NATO Short-Barreled Rifle – Moriarti Custom Series MA-15 BLACKBOX

Introducing the Moriarti Custom Series MA-15 BLACKBOX, a distinctive 10.5-inch 5.56 NATO short-barreled rifle combining premium forged receiver construction with a striking tungsten-grey, black, and bronze finish.

Designed as part of the Moriarti Custom Series, BLACKBOX features a 10-inch tungsten-grey Moriarti M-LOK handguard, black anodized 7075-T6 forged aluminum upper and lower receivers, and contrasting bronze receiver pins and controls. Its black Magpul MOE SL-M adjustable stock completes the rifle's streamlined appearance.

At the center of BLACKBOX is a 10.5-inch 4150 Chrome Moly Vanadium (CMV) steel barrel with a nitride finish, 1:7 twist rate, and 1/2×28 muzzle threading. The barrel is paired with a carbine-length gas system, low-profile steel gas block, and stainless steel gas tube.

Both receivers are manufactured from 7075-T6 aluminum forgings, offering the strength and dimensional characteristics associated with forged AR-15 receiver construction. The A3 flat-top upper features M4 feed ramps and a continuous 1913 Picatinny optics rail.

The operating assembly includes an M16-cut 8620 steel bolt carrier group with a nitride finish and properly staked gas key.

BLACKBOX is equipped with a black faux-suppressor-style muzzle device, solid black curved trigger, billet trigger guard, bronze-accented controls, bronze receiver pins, black polymer pistol grip, and polymer flip-up sights.

A black Magpul MOE SL-M adjustable stock and included detachable magazine complete the configuration.

Moriarti Custom Series BLACKBOX — forged construction, compact proportions, and a distinctive three-tone finish.

Key Features

• Moriarti Custom Series: Distinctive MA-15 BLACKBOX configuration

• 10.5" 5.56 NATO barrel: 4150 CMV steel with nitride finish and 1:7 twist

• Forged 7075-T6 upper receiver: A3 flat-top configuration with black anodized finish

• Forged 7075-T6 lower receiver: Moriarti MA-15 with black anodized finish

• 10" Moriarti M-LOK handguard: Tungsten-grey finish with clean, unmarked exterior

• Bronze receiver pins and controls: Contrasting hardware accents

• Carbine-length gas system: Low-profile steel gas block and stainless steel gas tube

• M16-cut bolt carrier group: 8620 steel, nitride finish, properly staked gas key

• M4 feed ramps: Standard AR-15 feeding geometry

• Magpul MOE SL-M stock: Compact black adjustable shoulder stock

• Solid black trigger: Traditional curved trigger profile

• Black faux-suppressor-style muzzle device: 1/2×28 threaded cosmetic muzzle treatment

• Polymer flip-up sights: Included

• Detachable magazine: Included, subject to applicable capacity restrictions

Specifications

Package Includes

• One Moriarti Custom Series MA-15 BLACKBOX 10.5" 5.56 NATO SBR

• Installed 10" tungsten-grey Moriarti M-LOK handguard

• Installed black Magpul MOE SL-M adjustable stock

• Installed black faux-suppressor-style muzzle device

• Bronze receiver pins and bronze-accented controls

• One set of polymer flip-up sights

• One detachable magazine, with capacity determined by applicable restrictions

Frequently Asked Questions

What is the Moriarti Custom Series MA-15 BLACKBOX?

The MA-15 BLACKBOX is a 10.5-inch 5.56 NATO short-barreled rifle featuring forged 7075-T6 aluminum receivers, a tungsten-grey M-LOK handguard, bronze controls, and a black Magpul MOE SL-M adjustable stock.

Are the upper and lower receivers forged or billet?

Both the upper and lower receivers are manufactured from 7075-T6 aluminum forgings. The upper features an A3 flat-top configuration, while the lower is a Moriarti MA-15 receiver.

What barrel does BLACKBOX use?

BLACKBOX features a 10.5-inch 4150 CMV steel barrel with a nitride finish, 1:7 twist rate, and 1/2×28 muzzle threading.

Is the BLACKBOX an AR pistol or a short-barreled rifle?

BLACKBOX is configured as a short-barreled rifle (SBR) because it combines a barrel shorter than 16 inches with a shoulder stock.

Does BLACKBOX include a suppressor?

No. The black faux-suppressor-style muzzle device is cosmetic and is not a sound suppressor.

What makes the BLACKBOX finish unique?

The Moriarti Custom Series BLACKBOX combines a tungsten-grey M-LOK handguard, black anodized forged receivers, black furniture, and bronze receiver pins and controls.

What stock is included?

BLACKBOX includes a black Magpul MOE SL-M adjustable stock.

Are sights included?

Yes. Polymer flip-up sights are included with the rifle.

Does BLACKBOX include a magazine?

Yes. One detachable magazine is included. Magazine capacity is determined by applicable state and local restrictions.

Can I mount an optic?

Yes. The A3 flat-top upper receiver features a 1913 Picatinny rail for compatible optic mounts.

Is an FFL transfer required?

Yes. BLACKBOX is an FFL transfer item and is subject to applicable federal, state, and local requirements governing short-barreled rifles.

FFL Transfer & SBR Notice

FFL TRANSFER REQUIRED — SHORT-BARRELED RIFLE (SBR)

The Moriarti Custom Series MA-15 BLACKBOX is configured as a short-barreled rifle. Purchase, possession, shipment, and transfer are subject to applicable federal, state, and local laws, including applicable National Firearms Act requirements.

Please have your receiving FFL send a copy of its license to [email protected] to coordinate the transfer.

Availability is subject to applicable legal restrictions and transfer eligibility. Orders may be restricted or declined where this configuration cannot lawfully be transferred.

Product Image Notice

Images may not be the exact representation of the product.