10.5" 5.56 NATO AR-15 Upper Assembly – Rocket Man Muzzle Brake, 10" M-LOK

10.5" 5.56 Upper: Specs & Features

The Moriarti Rocket Man is a 10.5" 5.56 NATO AR-15 upper assembly featuring a distinctive Rocket Man muzzle brake, a 10" slim M-LOK handguard, and a government-profile barrel.

The assembly uses a nitride-treated 4150 CMV steel barrel with a 1:7 right-hand twist, carbine-length gas system, and .750 low-profile gas block. Its forged 7075-T6 aluminum A3 flat-top receiver has a black hardcoat-anodized finish, installed forward assist, dust cover, and M4 feed ramps.

The Rocket Man muzzle brake is installed with a crush washer on the barrel's 1/2x28 threads.

Key Features

• 10.5" government-profile 4150 CMV barrel

• 5.56 NATO chamber, compatible with .223 Remington

• Nitride barrel treatment

• 1:7 right-hand twist

• Rocket Man muzzle brake with crush washer

• 1/2x28 muzzle threads

• Carbine-length gas system

• .750 low-profile steel gas block

• 10" slim aluminum M-LOK handguard

• Forged 7075-T6 A3 upper receiver

• Black hardcoat-anodized receiver and handguard

• Installed forward assist and dust cover

• M4 feed ramps

Package Includes

• Assembled 10.5" upper

• Installed Rocket Man muzzle brake and crush washer

• 10" M-LOK handguard

• Installed carbine-length gas system

• A3 upper receiver with forward assist and dust cover

Bolt carrier group, charging handle, and lower receiver are not included.

Frequently Asked Questions

What distinguishes the Rocket Man upper from a standard 10.5" upper?

Its defining feature is the Rocket Man muzzle brake.

What barrel does this upper use?

A 10.5" government-profile, nitride-treated 4150 CMV barrel with a 1:7 right-hand twist.

Does the upper include a bolt carrier group or charging handle?

No. Both are excluded from the standard package.

Product Image Notice

Images may not be the exact representation of the product.

FAQ

Will this upper fit my AR-15 lower?

Yes. It fits any standard mil-spec AR-15 lower receiver and uses a standard 5.56 bolt carrier group and STANAG/AR-15 magazines.

Can I shoot both 5.56 NATO and .223 Remington?

Yes. A 5.56 NATO or .223 Wylde chamber safely fires both 5.56 NATO and .223 Remington ammunition.

Is a bolt carrier group included?

Yes. This upper ships with a bolt carrier group, so it is ready to install on a compatible AR-15 lower.

What twist rate does it use?

A 1:7 twist, the mil-spec rate that stabilizes 55 gr through heavy 77 gr loads.

Related: 5.56 NATO & .223 Wylde AR-15 uppers