The Moriarti AR-15 300 Blackout 16" Black Shark Upper Assembly delivers fierce performance and compliance in a sleek, custom configuration. Designed with shooters in restrictive states in mind, this upper is CA and NY compliant and crafted for tactical reliability and eye-catching aesthetics.
Built around a 16” medium profile barrel, this upper utilizes 4150 CMV steel, heat-treated and nitride-coated for long-lasting durability. The 1:7 twist rate and M4 feedramps ensure subsonic and supersonic rounds are stabilized with precision.
What sets this assembly apart is its 4" custom steel Shark muzzle brake—a bold design element that reduces muzzle rise and adds aggressive style. The 12” mid-length slim M-LOK handguard gives you plenty of room to mount lights, grips, or optics with ease.
Finished with a 7075-T6 forged upper receiver, hardcoat anodized to government specs, the Black Shark upper is a precision component ready to perform.
Chamber: 300 AAC Blackout
Barrel: 16" Medium Profile, 4150 CMV, Nitride Finish
Twist Rate: 1:7 Button Rifled
Thread Pattern: 5/8x24
Muzzle Device: Custom 4" Steel Shark Muzzle Brake
Gas System: Pistol Length
Gas Block Diameter: .750
Handguard: 12” Mid-Length M-LOK Slim Rail
Receiver: A3 Flat Top, 7075-T6 Forged Aluminum, Hardcoat Anodized
Extras: Forward Assist and Dust Cover Installed
BCG & Charging Handle: Not Included (Available Separately)
State Compliant AR-15 Builds (CA/NY Legal)
Tactical and Home Defense Setups
Shooters Seeking Custom Aesthetics with Proven Performance
For short barrel builds, check out the Moriarti AR-15 300 Blackout 10.5" Upper
Images may not be an exact representation of the product.
Tags: ar-15, 300, blackout, 16 16", med, profile, shark, upper, assembly, mlok