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 .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 .22 LR 4.5" Micro Pistol Kit – CMMG Compatible | Choose Color
Build an ultra-compact dedicated rimfire AR with the Moriarti AR-15 .22 LR 4.5" Micro Pistol Kit. Ma..
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AR-15 .22 LR 9" Pistol Kit – CMMG Compatible | M-LOK | Choose Color
Build a compact dedicated rimfire AR with the Moriarti AR-15 .22 LR 9" Pistol Kit. Made in the USA a..
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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 Parts 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..
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AR-15 .350 Legend 18" Rifle Kit | M-LOK | Hunting Configuration
Built for hunters looking for a longer-barreled .350 Legend AR-15 rifle configuration, this Moriarti..
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AR-15 .400 Legend 16" Rifle Kit | 1:16 Twist | Quad Rail | LE Stock
Built for shooters looking for a .400 Legend AR-15 rifle configuration, this Moriarti 16" .400 Legen..
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AR-15 .400 Legend 18" Rifle Kit | 1:16 Twist | Mlok | 6.5 Grendel BCG
Built for hunters and shooters looking for a longer-barreled .400 Legend AR-15 rifle configuration, ..
AR-15 12″ SOCOM Series Parts Kit – Suppressor Clearance Ready, Various Anodized Colors
The AR-15 12″ SOCOM Series Parts Kit combines a suppressor-clearance-ready M-LOK handguard, lightwei..
AR-15 15" HONEYCOMB SERIES Complete Furniture Set | M-LOK | Anodized Finish | Choose Color
The AR-15 HONEYCOMB SERIES Complete Furniture Set is crafted for precision, lightweight performance,..
AR-15 15" ULTRALIGHT SERIES Furniture Set | Lightweight, Durable & Available in Black Chrome & Chrome
The AR-15 15" ULTRALIGHT SERIES COMPLETE FURNITURE SET offers the perfect blend of lightweight desig..
AR-15 15" ULTRALIGHT SERIES PVD Coated Furniture Set | Lightweight, Durable & Premium Finish
The AR-15 15" ULTRALIGHT SERIES COMPLETE FURNITURE SET with a PVD coated finish offers an unmatched ..
AR-15 15″ SOCOM Series Parts Kit – Suppressor Clearance Ready, Various Anodized Colors
The AR-15 15″ SOCOM Series Parts Kit combines a suppressor-clearance-ready M-LOK handguard, lightwei..
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AR-15 16" 6mm ARC Rifle Kit - Choose Color, Quadrail | Made in the USA | Moriarti Armaments
Build your perfect AR-15 with the 16" 6mm ARC Rifle Kit from Moriarti Armaments. This high-performan..
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AR-15 16" Left Hand Slick Design Upper Assembly with 12" Mlok and A2 - Choose Caliber
AR-15 16" Left Hand Slick Design Upper Assembly with 12" Mlok and A2 flash hider is an upper fo..
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AR-15 300 Blackout 16" Med Profile Black Shark Upper Assembly - 15" Mlok
16 Inch 300 Blackout AR-15 Upper Assembly – Black Shark EditionThe Moriarti 16 Inch 300 Blackout Upp..
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AR-15 300 Blackout 5" Centurion Upper Assembly / MLOK – Choose Handguard Color
Unleash compact performance with the Moriarti 5 Inch 300 Blackout Pistol Upper Assembly – Centurion ..
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AR-15 300 Blackout 5" Micro Upper Assembly / Sound Forwarder / Mlok / 1x7
Upgrade your AR-15 build with this 300 Blackout 5" Nitride Upper Assembly from Moriarti Armaments, d..
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AR-15 300 Blackout 5" PISTOL BILLET UPPER / 4'' MLOK / GOLD MUZZLE / CH
AR-15 300 Blackout 5" PISTOL BILLET UPPER / 4'' MLOK / GOLD MUZZLE BRAKE FEATURES:300 Blackout 5 Inc..
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AR-15 300 BLACKOUT 5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 4" HANDGUARD - MICRO - CERAKOTE CAMO BURNT BRONZE
Unleash your full potential with the AR-15 300 Blackout 5" Pistol Kit, designed for ultimate precisi..