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-74 5.45x39 Tactical Rifle Kit – 16" Barrel, Quadrail, LE Stock, No Lower
The AR-74 5.45x39 Tactical Rifle Kit from Moriarti Armaments brings military-grade ballistics and mo..
-44%
Combo Set: .22LR Kit – 9" Barrel, Stainless Bolt Group & Charging Handle
Get everything you need to upgrade your AR-15 with our comprehensive .22LR Combo Set. This kit featu..
-25%
Combo Set: Dedicated .22LR Kit – 4.5" Barrel, Stainless Bolt Group & Charging Handle
Enhance your AR-15 with our dedicated .22LR Kit, designed for compact and efficient performance. Thi..
Diamondback DB15 5.56/.223 Semi-Automatic Rifle – M-LOK – 16" Barrel – Made in USA
Introducing the Diamondback DB15, a semi-automatic rifle that combines military-grade performance wi..
Moriarti .22LR Conversion Chamber Adapter for AR-15 .223/5.56 – Stainless Steel | CMMG-Compatible
Easily convert your standard AR-15 upper chambered in .223/5.56 to accept .22LR rounds with this CMM..
-33%
Moriarti AR-15 400 Legend 10.5" Pistol Upper – Nitride 4150 CMV Barrel, M-LOK Rail, A2 Flash Hider
The Moriarti AR-15 400 Legend 10.5" Pistol Upper Assembly offers unmatched ballistic power in a comp..
-15%
Moriarti AR-15 5.56 NATO 24" Spiral Fluted SS Heavy Barrel – 1:8 Twist | Rifle Gas | 416R
Elevate your AR-15’s precision with the Moriarti 5.56 NATO 24" Spiral Fluted Heavy Barrel, crafted f..
MORIARTI AR-300 Blackout 16" Diamond Cut 12" M-LOK Upper Assembly – Black
Elevate your AR platform with the MORIARTI AR-15 300 Blackout 16" Diamond Cut Upper Assembly, engine..
MORIARTI AR-74 5.45X39 16" DIAMOND CUT 12" MLOK UPPER ASSEMBLY / A2 / BLACK
The Moriarti Armaments AR-74 5.45X39 16" Diamond Cut 12" MLOK Upper Assembly / A2 / Black is a high-..
Moriarti AR-74 5.45x39 16" MLOK Upper Assembly / Slip Over Barrel Shroud
The AR-74 5.45x39 16" MLOK Upper Assembly offers a powerful, versatile, and unique shooting experien..
Moriarti Armaments AR-15 5.45X39 "Vortex Vanguard" 16" M4 Sporting Rifle - MLOK/LE Stock
The Moriarti Armaments AR-15 5.45X39 "Vortex Vanguard" 16" M4 Sporting Rifle is a cutting-edge, high..
-33%
Red Diamond Tactical AR-15 5.56/.223 16" Upper Assembly - M-LOK
Elevate your AR-15 with the Red Diamond Tactical 16" Upper Assembly, designed exclusively for Moriar..
VG6 Precision Epsilon 556 Compensator - 1/2x28
Manufacturer: Aero Precision The VG6 EPSILON 556 is our highest performing tactical muzzle devic..
AR-15 5.56 M4E1 Carbine Complete Lower Receiver w/ A2 Grip, No Stock - Aero Precision
The M4E1 Complete Lower Receiver by Aero Precision is the ideal foundation for your custom AR-15 bui..
-20%
AR-15 5.56/.223 20" black diamond modular bull upper assembly
AR-15 5.56/.223 20" black diamond modular bull upper assembly is offered exclusively by Moriarti Arm..
-20%
AR-15 5.56/.223 20" bronze diamond modular bull upper assembly
AR-15 5.56/.223 20" bronze diamond modular bull upper assembly is offered exclusively by Moriarti Ar..
AR-15 5.56/.223 20" NITRIDE SPIRAL UPPER ASSEMBLY / MLOK / TRIPORT
AR-15 5.56/.223 20" Nitride Spiral Upper Assembly / MLOK / Triport Brake - Precision and Performance..
AR-15 5.56/.223 20" Stainless Black Spiral Fluted Bull Upper Assembly / Mlok
Upgrade Your AR-15 with Precision and Performance:The AR-15 5.56/.223 20" Stainless Black Spiral Flu..
-41%
AR-15 Moriarti Duo TakeDown Semi Auto Pistol | 5.56 Nato with 300 Blackout or 350 Legend Combo | SBA3 Brace
The Ultimate Versatile AR Pistol – Quick Barrel Swap System for Dual Caliber Performance!Introducing..
AR-15 9" Trump Series M-LOK Free Float Handguard | Limited Edition with Monolithic Rail, Choose Your Anodized Finish
Introducing the AR-15 9" Trump Series M-LOK Free Floating Handguard, a Limited Edition designed to d..
Spike’s Tactical Spider Logo AR-15 Lower Receiver – Enhanced LPK / No Stock
Upgrade your next AR-15 build with the Spike's Tactical Spider Logo Lower Receiver, precision-machin..
AR-15 6.5 Grendel 14.5" Premium Pistol Upper with Super Slim M-LOK Rail – Perfect for Hunting Season
Prepare for the ultimate hunting season with the Moriarti Armaments AR-15 6.5 Grendel 14.5" Premium ..
AR-15 15" Trump Series M-LOK Free Float Handguard | Limited Edition with Monolithic Rail, Choose Your Anodized Color
Introducing the AR-15 15" Trump Series M-LOK Free Floating Handguard, a Limited Edition that offers ..
AR-15 6.5 Grendel 16" Diamond Fluted Stainless Steel Upper Assembly | M-LOK Handguard
Enhance your AR-15 with the 6.5 Grendel 16" Diamond Fluted Stainless Steel Upper Assembly, designed ..