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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AR-15 5.56 NATO 5'' Pistol Kit - Forged Upper / 4'' Super Slim Free Float, Prong Muzzle, and Camo Accents
AR-15 5.56 NATO 5'' Pistol Kit - Forged Upper with 4'' Super Slim Free Float, Prong Muzzle, and Camo..
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AR-15 5.56 NATO 5'' Pistol Length Barrel 1:5 5R Twist Nitride and Micro Gas Tube
Specifications:Length: 5" Pistol5.56 NATO1:5 5R Twist.750" gas block diameterProprietary Micro ..
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AR-15 5.56 NATO 5'' STAY SPOOKY PISTOL KIT - BILLET SLICK UPPER WITH 4'' HANDGUARD- COLOR SET UPPER OPTION
Create the ultimate compact AR-15 with this 5.56 NATO 5" Pistol Kit, featuring a Billet Slick Upper,..
AR-15 5.56 NATO 5” Micro-Length Barrel – 1:5 Twist, Medium Profile, QPQ Finish | Moriarti Armaments
Engineered for maximum compactness and velocity in a micro-platform, the Moriarti 5” 5.56 NATO barre..
AR-15 5.56 NATO 6” Micro-Length Barrel – 1:7 Twist, Medium Profile, QPQ Finish | Moriarti Armaments
Enhance your compact AR-15 build with the Moriarti Arms 5.56 NATO 6" Micro Gas QPQ Barrel—engineered..
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AR-15 5.56/.223 16" Govt Profile BLACK SHARK Upper Assembly / MLOK
Upgrade your AR-15 build with the AR-15 5.56/.223 16" "BLACK SHARK" Upper Assembly. Designed for pre..
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AR-15 5.56/.223 16" Bull Upper Assembly / 15" MLOK Rail / Black
Elevate your shooting experience with the AR-15 5.56/.223 16" Bull Upper Assembly, featuring a preci..
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AR-15 5.56/.223 16" M4 Carbine Upper with 15" M-LOK Handguard and Claw Muzzle Brake – 1:7 Twist, Carbine-Length
The AR-15 16" M4 Carbine Upper Assembly from Moriarti Arms delivers dependable performance, modular ..
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AR-15 5.56/.223 16" M4 Magpul MOE Flat Top Upper Assembly – FDE
Upgrade your AR-15 build with the 5.56/.223 16" M4 Magpul MOE Flat Top Upper Assembly in FDE. Design..
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AR-15 5.56/.223 16" M4 MAGPUL MOE SIGHT TOWER COMPLETE RIFLE KIT - FDE
AR-15 16" 5.56/.223 M4 MAGPUL MOE SIGHT TOWER COMPLETE RIFLE KIT - available in black, FDE and OD Gr..
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AR-15 5.56/.223 16" M4 Tactical Rifle Kit with 15" Mlok Super Slim Handguard - Mil-Spec, USA Made
The AR-15 5.56/.223 16" M4 Tactical Rifle Kit contains all the essential components you need to comp..
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AR-15 5.56/.223 16" M4 Upper Assembly with Triport Muzzle Brake and M-LOK Handguard - Choose Color
The Moriarti AR-15 5.56 NATO upper assembly features a 16-inch M4-profile 4150V chrome-moly steel ba..
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AR-15 5.56/.223 16" M4 Upper with Red MLOK Handguard & Custom Pineapple Muzzle Brake | Moriarti Arms
Make a statement at the range with the AR-15 5.56/.223 16" M4 Red Upper Assembly with Custom Pineapp..
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AR-15 5.56/.223 16" Rifle Parts Kit / 10" Mlok / LE Stock
AR-15 5.56/.223 16" Rifle Parts Kit / 10" Mlok / LE Stock contains all components to complete y..
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AR-15 5.56/.223 16" Stainless Black Claw rifle parts kit /12" mlok / Adaptive Stock
AR-15 5.56/.223 16" Stainless Bear Claw rifle parts kit /12" mlok rail contains all components ..
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AR-15 5.56/.223 16" stainless steel diamond rifle kit /12" mlok rail
AR-15 5.56/.223 16" stainless steel diamond rifle kit w/12" mlok rail contains all components t..
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AR-15 5.56/.223 16" Stainless Steel Premium Quad Rail Upper – .223 Wylde, 1:8 Twist | Moriarti Armaments
Upgrade your AR-15 with Moriarti's 16” Stainless Steel Premium Quad Upper, designed for performance,..
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AR-15 5.56/.223 16" stainless steel spiral rifle kit /12" mlok rail
AR-15 5.56/.223 16" stainless steel spiral rifle kit w/12" mlok rail contains all components to..
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AR-15 5.56/.223 16" stainless steel straight cut rifle kit /12" Mlok
AR-15 5.56/.223 16" stainless steel straight cut rifle kit w/12" Mlok rail contains all compone..
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AR-15 5.56/.223 24" Spiral Stainless Steel Fluted Upper Assembly | M-LOK | Triport Muzzle Brake
Enhance your AR-15 build with the 24" Spiral Stainless Steel Fluted Upper Assembly, engineered for p..
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AR-15 5.56/.223 5" MICRO PISTOL KIT /4" MLOK / COLOR ACCENT CHOICE
Build Your Own Micro AR Pistol with Ease – This comprehensive kit includes everything you need to as..
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AR-15 5.56/.223 5″ Micro Pistol Kit – 1:5 Twist, Micro Buffer, 4″ M-LOK Rail, Mil-Spec Components
The AR-15 5.56/.223 5″ Micro Pistol Kit from Moriarti Armaments offers a compact and powerful AR pis..
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AR-15 6.5 Grendel 10" Premium Pistol Upper – M-LOK, A2 Flash, and Super Slim Rail
Unleash the Power of the 6.5 Grendel with Our Premium AR-15 Pistol Upper. Designed for shooters who ..
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AR-15 6.5 Grendel 10" Premium Upper Assembly | M-LOK Handguard | Nitride Finish | Available in FDE, OD Green, and Grey
Upgrade your AR-15 with the Moriarti Armaments 6.5 Grendel 10" Premium Upper Assembly—a high-perform..