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-15 300 Blackout 5" Shark Pistol Kit - Side Cut Billet Upper with 4" Handguard - Classic Mini
AR-15 300 Blackout 5" Shark Pistol Kit - Side Cut Billet Upper with 4" Handguard - Classic Mini Unl..
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AR-15 300 BLACKOUT 5" SPIDER PISTOL KIT - FORGED UPPER WITH 4" HANDGUARD - COLOR SET
AR-15 300 BLACKOUT 5" SPIDER PISTOL KIT - FORGED UPPER WITH 4" HANDGUARD - COLOR SETBuild Your Own H..
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AR-15 300 BLACKOUT 5'' PISTOL BILLET UPPER / CH / 4'' MLOK / STAY SPOOKY- COLOR SET
Moriarti Armaments introduces the Stay Spooky 300 Blackout Pistol Upper, a compact, lightweight, and..
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AR-15 300 Blackout 5'' Pistol Kit - Side Cut Billet Upper, 4'' Super Slim Handguard, 'Stay Spooky' Skull Dust Cover - Color Set Options
AR-15 300 Blackout 5'' Pistol Kit - Side Cut Billet Upper, 4'' Super Slim Handguard, 'Stay Spooky' S..
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AR-15 300 BLK 5" Pistol Hybrid Upper Assembly, Spitfire Muzzle, Mlok Handguard, Zombie Green – Moriarti Arms
Elevate your build with the AR-15 300 BLK 5" Pistol Hybrid Upper Assembly in Zombie Green, precision..
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AR-15 300 BLK 5" Pistol Upper Assembly - Gold Spitfire / Mlok
Unleash precision, power, and performance with the AR-15 300 Blackout 5" Pistol Upper Assembly featu..
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AR-15 300 BLK 5'' PISTOL KIT - BILLET UPPER / 4'' HANDGUARD / CERAKOTE SPLATTER - CHOOSE COLOR
AVAILABLE IN PINK, TIFFANY BLUE, WHITE, RED AND ORANGE. CHOOSE YOUR PREFERENCE ON TOP OF PAGE.KIT IN..
-456x456.webp "AR-15 350 Legend 7.5\" Mlok Upper Assembly with Shroud and Mlok")
-456x456.webp "AR-15 350 Legend 7.5\" Mlok Upper Assembly with Shroud and Mlok")
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AR-15 350 Legend 7.5" Mlok Upper Assembly with Shroud and Mlok
This Moriarti AR-15 .350 Legend 7.5" upper assembly pairs a 4150 chrome moly government-profile barr..
AR-15 4" AIR-LOK Series M-LOK Compression Free Floating Handguard with Monolithic Top Rail – Multiple Anodized Colors Available
The 4" AIR-LOK Series M-LOK Compression Free Floating Handguard for AR-15 combines cutting-edge desi..
-456x456.webp "AR-15 4\" Parallelogram M-LOK Handguard - Choose Color, Aircraft Grade 6061 Aluminum")
-456x456.webp "AR-15 4\" Parallelogram M-LOK Handguard - Choose Color, Aircraft Grade 6061 Aluminum")
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AR-15 4" Parallelogram M-LOK Handguard - Choose Color, Aircraft Grade 6061 Aluminum
The AR-15 4" Parallelogram M-LOK Handguard - Choose Color, Aircraft Grade 6061 Aluminum is built for..
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AR-15 4.5" .22LR Dedicated Upper Assembly with M-LOK Handguard & Flash Can Comp
The 4.5" .22LR Dedicated Upper Receiver from Moriarti Armaments is the perfect upgrade for your AR-1..
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AR-15 4.5" Micro ARP Suppressor Ready Pistol Upper Assembly – Multiple Calibers & Colors
The Moriarti 4.5" Micro ARP Suppressor Ready Pistol Upper Assembly is a compact AR-platform upper of..
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AR-15 5.56 NATO 14.5" Rifle Kit with 10" Quadrail | Choose Your Color | Precision Custom Build
The AR-15 5.56 NATO 14.5" Rifle Kit with a 10" Quadrail offers the ultimate precision and reliabilit..
AR-15 5.56 NATO 16" A1 Slick-Side Upper Assembly – 15" Moriarti M-LOK
The Moriarti AR-15 5.56 NATO A1 Slick-Side Upper Assembly combines a 16-inch nitride-coated 4150 CMV..
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AR-15 5.56 NATO 16" Carbine Upper Assembly with 15" M-LOK Handguard | CERAKOTE GRAD Colors | Tactical Charging Handle
Build your dream AR-15 with the Moriarti Arms® 5.56 NATO 16" Carbine Upper Assembly, designed for pe..
AR-15 5.56 NATO 16" Carbine Upper Assembly – Pinned FSB, Magpul MOE SL
The Moriarti AR-15 5.56 NATO 16" Carbine Upper Assembly features a traditional carbine configuration..
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AR-15 5.56 NATO 16" Rifle Kit with 10" Quadrail, Tanker Muzzle Brake, and Camo Burnt Bronze Finish
Build your custom AR-15 with the AR-15 5.56 NATO 16" Rifle Kit, featuring a 10" quadrail, camo burnt..
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AR-15 5.56 NATO 16" Rifle Kit | Slick Side | 10" Quad Rail | LE Stock
Build a classic, versatile AR-15 rifle configuration with this Moriarti 5.56 NATO 16" AR-15 rifle ki..
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AR-15 5.56 NATO 5" BEWARE PISTOL KIT - MLOK - MICRO
Unleash your inner gunsmith with the AR-15 5.56 NATO 5" Pistol Kit, designed for performance, precis..
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AR-15 5.56 NATO 5" Compression Series Kit – LE 6-Position Stock
The Moriarti Armaments Compression Series is an AR-15 component kit chambered in 5.56 NATO/.223 Remi..
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AR-15 5.56 NATO 5" Micro ARP Pistol Upper – Blue Accent
The Moriarti AR-15 5.56 NATO 5" Pistol Upper combines compact Micro ARP styling with distinctive blu..
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AR-15 5.56 NATO 5" PISTOL KIT - BILLET UPPER / 4" HANDGUARD / CERAKOTE SPLATTER - CHOOSE YOUR COLOR
AR-15 5.56 NATO 5" PISTOL KIT - BILLET UPPER / 4" HANDGUARD / CERAKOTE SPLATTER - CHOOSE YOUR COLORU..
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AR-15 5.56 NATO 5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 4" COMBAT MODULAR M-LOK HANDGUARD - BURNT BRONZE CERAKOTE ACCENTS
Build your dream AR-15 pistol with this high-performance 5.56 NATO 5" Pistol Kit, featuring side cut..
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AR-15 5.56 NATO 5" Pistol Kit - Side Cut Billet Upper with 4" Handguard | Gradient Color Option
Transform your AR-15 build with this 5.56 NATO 5" Pistol Kit, designed for superior performance and ..