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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Moriarti .50 Beowulf 10.5" AR-15 Upper Assembly – Black Diamond Cut M-LOK, A2 Flash Hider
The Moriarti .50 Beowulf 10.5" AR-15 Upper Assembly features a heavy-profile 4150 Chrome Moly Vanadi..
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Moriarti AR-15 .338 ARC 10.5" Upper Assembly | M-LOK | A2 Flash Hider
Experience the superior performance of the Moriarti AR-15 .338 ARC 10.5" Upper Assembly, built for p..
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Moriarti AR-15 16" Complete Upper Assembly with Left Hand Side Charger - Choose Caliber
This AR-15 16” Tactical Upper Assembly is designed for left-handed shooters or anyone seeking a stre..
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Moriarti AR-15 300 Blackout 10.5" Diamond Cut Upper Assembly / Triport / Mlok / Black
The Moriarti AR-15 300 Blackout 10.5" Diamond Cut Upper Assembly pairs a 10.5" .300 AAC Blackout bar..
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Moriarti AR-15 300 Blackout 14.5" Slim M-LOK Upper Assembly - 12" Free-Float Handguard / Thread Protector / 1X7 Twist
The Moriarti 14.5" 300 Blackout Upper Assembly delivers the versatility of 300 AAC Blackout in a lon..
Moriarti AR-15 4" M-LOK Slim Profile Free Float Handguard - Diamond Cut, Black Anodized
The Moriarti AR-15 4" M-LOK Slim Profile Free Float Handguard offers a sleek and lightweight design ..
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MORIARTI AR-15 5.56 NATO 16" M4 CARBINE UPPER ASSEMBLY / 15" MLOK / TRI
MORIARTI AR-15 5.56 NATO 16 M4 Carbine Upper Assembly with a 15 MLOK rail and triport muzzle brake i..
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Moriarti AR-15 5.56 NATO 16" Magpul MOE Semi-Auto Rifle
The Moriarti MA-15 is a semi-automatic AR-15 rifle chambered in 5.56 NATO and compatible with .223 R..
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Moriarti AR-15 5.56 NATO 16" Tactical Rifle – FDE M-LOK, Magpul SL-K
The Moriarti MA-15 Tactical Rifle is a 5.56 NATO AR-15 platform rifle featuring a 16-inch 4150 Chrom..
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Moriarti AR-15 5.56/.223 14.5" Tactical Parts Kit – Quadrail, LE Stock, Mid-Length
Unlock your full potential with the AR-15 5.56/.223 14.5" Tactical Parts Kit. This premium kit provi..
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MORIARTI AR-15 5.56/.223 16" M4 BARRETT STYLE UPPER ASSEMBLY / FDE
Upgrade your AR-15 build with the Moriarti Arms® 5.56/.223 16" M4 Barrett Style Upper Assembly in FD..
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Moriarti AR-15 5.56/.223 16" M4 Magpul MOE Rifle Kit – Complete Mil-Spec Build (FDE/Black/ODG, No Lower)
Complete your AR-15 build with the AR-15 5.56/.223 16" M4 Magpul MOE Defender Rifle Kit, available i..
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Moriarti AR-15 5.56/.223 16" Tactical Rifle Kit – M4 Classic w/ Quadrail, 1:7 Twist
The AR-15 5.56/.223 16" M4 Classic Tactical Rifle Parts Kit is the perfect solution for enthusiasts ..
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Moriarti AR-15 5.56/.223 16" ‘Black Canon’ Upper Assembly – 7" Faux Can, M-LOK Rail
Unleash unparalleled performance with the AR-15 5.56/.223 16" M4 "BLACK CANON" Upper Assembly from M..
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Moriarti AR-15 6.8 SPC II 10.5" Complete Upper Assembly | M-LOK | A2 Flash Hider | Suppressor Ready
Upgrade your AR-15 with the Moriarti Armaments 6.8 SPC II 10.5" Complete Upper Assembly, engineered ..
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MORIARTI AR-15 COMPLETE PISTOL LOWER / SB TACTICAL PDW PISTOL BRACE - BLACK
The MORIARTI AR-15 COMPLETE PISTOL LOWER / SB TACTICAL PDW PISTOL BRACE in Black is the perfect solu..
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Moriarti AR-15 Unassembled Lower Parts Kit – Rare Breed FRT-15L3
The Moriarti AR-15 Unassembled Lower Parts Kit with Rare Breed FRT-15L3 combines the major component..
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Moriarti AR-15 Unassembled Lower Parts Kit – Rare Breed FRT-15L3 | SOPMOD Stock
The Moriarti AR-15 Unassembled Lower Parts Kit with Rare Breed FRT-15L3 combines a serialized no-log..
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Moriarti AR-15 Unassembled Pistol Lower Parts Kit – Rare Breed FRT-15L3 | SB Tactical SBA3 Brace
The Moriarti AR-15 Unassembled Pistol Lower Parts Kit with Rare Breed FRT-15L3 combines a serialized..
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MORIARTI AR-47 7.62X39 16" RED "PINEAPPLE" UPPER ASSEMBLY
Key Features:Action: Semi-AutoGas System: Carbine-Length Gas SystemChamber: 7.62x39Twist Rate: 1/10 ..
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Moriarti AR-47 7.62x39 5" Moriarti Minimalist Series Semi Auto Pistol | Ergo | Micro Buffer
The AR-47 Minimalist Series Pistol by Moriarti Arms delivers a compact, rugged, and powerful platfor..
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Moriarti Armaments AR-15 300 Blackout 5" Cookie Cutter Upper Assembly
Elevate your shooting experience with the Moriarti Armaments 300 Blackout 5" Cookie Cutter Upper Ass..
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Moriarti Armaments AR-15 Stripped Upper Receiver – Forged, Black Anodized
The Moriarti Armaments AR-15 Stripped Upper Receiver is the perfect foundation for your next AR-15 b..
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Moriarti Armaments Assembled M4 Upper Receiver with Port Door and Forward Assist
Upgrade your AR-15 with the Moriarti Armaments Assembled M4 Upper Receiver. Designed for superior pe..