AR-15 Parts, Rifles, Uppers & Accessories
AR-15 Rifles, Kits & Gun Accessories
Welcome to the AR-15 hub at Moriarti Armaments—your one-stop destination for AR-15 rifles, pistols, upper assemblies, complete lowers, parts, kits, barrels, triggers, handguards, magazines, optics, and accessories. Whether you're building a custom rifle, upgrading an existing firearm, or replacing worn components, you'll find quality products engineered for reliability and performance. Browse complete AR-15 solutions and individual components for popular calibers including 5.56 NATO, .223 Wylde, 300 AAC Blackout, 7.62x39, 6.5 Grendel, 6MM ARC, .224 Valkyrie, .350 Legend, .400 Legend, .450 Bushmaster, .458 SOCOM, .50 Beowulf, 12.7x42, and more.
Why is the AR-15 platform so popular?
The AR-15 platform is popular because of its modular design, broad parts availability, caliber selection, and ability to support many different configurations. AR-15-style firearms can be configured for cartridges including 5.56 NATO/.223 Remington, 300 Blackout, 6.5 Grendel, 6.8 SPC II, 7.62x39, .350 Legend, .400 Legend, .450 Bushmaster, .50 Beowulf/12.7x42, and .338 ARC, depending on the components used. Shooters can also choose among different barrel lengths, handguards, stocks or pistol configurations, triggers, optics, and finishes.
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300 AAC Blackout 16" Complete AR-15 Upper Assembly with CLAW Muzzle Brake | Moriarti Armaments
16 Inch 300 Blackout Upper – AR-15 300 AAC Blackout 16" Carbine CLAW Upper AssemblyUpgrade your AR-1..
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300 AAC Blackout 16" Complete AR-15 Upper Assembly – Black Canon Edition | Moriarti Armaments
300 Blackout 16 Inch Complete AR-15 Upper Assembly – Black Canon Edition | Moriarti ArmamentsExperie..
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4.5" Micro ARP Upper Assembly – 5.56, .300 BLK, 7.62×39 & .338 ARC | Mini Can
The Moriarti 4.5" Micro ARP Upper Assembly with Mini Can is a compact AR-15 upper configuration avai..
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5" 300 Blackout Upper Assembly – AR-15 Pistol Upper with American Flag Engraving & Shark Muzzle Brake | Moriarti Armaments
Upgrade your AR-15 platform with the Moriarti 5 Inch 300 Blackout Upper Assembly, designed for shoot..
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5" 5.56 NATO AR-15 Compression Series SBR-Ready Kit – Color Choice
The Moriarti Compression Series 5" 5.56 NATO SBR-Ready Kit is a multi-component AR-15 kit featuring ..
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5" 5.56 NATO AR-15 Pistol Upper Assembly – 1:5 5R Barrel, Custom Color Accents
The Moriarti 5" 5.56 NATO AR-15 Pistol Upper Assembly features a 4150 steel barrel with black nitrid..
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5" 5.56 NATO Micro ARP Cookie Cutter Upper Assembly – 4" M-LOK
The Moriarti AR-15 5.56 NATO 5" Cookie Cutter Upper Assembly combines aggressive styling with an ult..
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5" 5.56 NATO Micro ARP Gold Spitfire Upper Assembly – 4" M-LOK
Stand out with the Moriarti Micro ARP AR-15 5.56 NATO 5" Complete Upper Assembly, featuring an eye-c..
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5" 5.56 NATO Micro ARP Gradient Series Upper Assembly – Side-Cut Billet, 4" M-LOK
The Moriarti 5" 5.56 NATO Micro ARP Gradient Series Upper Assembly brings custom styling and distinc..
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5" 5.56 NATO Micro ARP Red Accent Pistol Upper Assembly with Charging Handle
The Moriarti 5" 5.56 NATO Micro ARP Red Accent Pistol Upper Assembly features a compact configuratio..
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5" 5.56 NATO Micro ARP Shark Flag Upper Assembly – Slick Billet, 4.2" M-LOK
The Moriarti 5" 5.56 NATO Micro ARP Shark Flag Upper Assembly combines distinctive custom accents wi..
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5" 5.56 NATO Micro ARP Sidewinder Pistol Upper Assembly – M-LOK
The Moriarti 5" 5.56 NATO Micro ARP Sidewinder Pistol Upper Assembly is part of the Moriarti Micro A..
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5" 5.56 NATO Micro ARP Spitfire Hybrid Upper Assembly – 4" M-LOK
The Moriarti 5" 5.56 NATO Micro ARP Spitfire Hybrid Upper Assembly is part of Moriarti's compact Mic..
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5" 5.56 NATO Micro ARP Suppressor Ready Upper Assembly – 4" M-LOK, A2 Flash Hider
The Moriarti 5" 5.56 NATO Micro ARP Suppressor Ready Upper Assembly is part of Moriarti's Micro ARP ..
5" 5.7x28 AR-15 Complete Upper – 4" M-LOK | BCG & CH Included
Go ultra-compact with the Moriarti 5" 5.7x28 AR-15 Complete Upper, designed for a compact 5.7x28 AR ..
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5" AR-15 Suppressor Ready Pistol Upper Assembly – Choose Caliber & Color
The Moriarti 5" AR-15 Suppressor Ready Pistol Upper Assembly is available in 5.56 NATO, .300 AAC Bla..
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AR 5.56 Cal Aluminum 30 Rnd Mag With Anti-Tilt Follower - Gold Plated
Specifications: Caliber: 223 Remington / 5.56 NATO / 300 Blackout Capacity: 30 Rounds..
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AR-15 .22 LR 16" Rifle Kit – CMMG Compatible | M-LOK | Choose Color
Build a dedicated rimfire AR with the Moriarti AR-15 .22 LR 16" Rifle Kit, featuring a lightweight p..
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AR-15 .300 Blackout 5" Micro Pistol Kit / 1:7 Twist / Micro Buffer / 4" M-LOK Rail
The Moriarti AR-15 .300 AAC Blackout 5" Micro Pistol Kit is a compact and powerful option for shoote..
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AR-15 .338 ARC 7.5" Pistol Build Kit | Black Nitride | Classic
Looking to build a .338 ARC AR-15 Pistol? Moriarti Armaments offers you the perfect base for your cu..
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AR-15 .338 ARC 7.5" Pistol Upper Assembly / Mlok Free Float
Upgrade your AR-15 pistol with the .338 ARC 7.5" Pistol Upper Assembly for unmatched power and perfo..
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AR-15 .350 Legend 10" Tactical Upper Assembly | M-Lok Handguard | Cerakote Color Options | 1:16 Twist | 5/8x24 Thread
Upgrade your AR-15 with the Moriarti Armaments .350 Legend 10" Tactical Upper Assembly, now availabl..
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AR-15 .350 Legend 10.5" Mlok Tactical Upper Assembly | Carbine-Length Gas System | A2 Flash Hider
Upgrade your AR-15 with the Moriarti Armaments .350 Legend 10.5" Mlok Tactical Upper Assembly and ta..
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AR-15 .350 Legend 10.5" Pistol Kit | SBA3 Brace | 10" M-LOK Rail
If you're looking for the perfect .350 Legend AR-15 pistol build, look no further than the 10.5" Pis..