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 6.5 Grendel 24″ stainless steel premium rifle kit / Mlok
AR-15 6.5 Grendel 24″ stainless steel premium rifle kit / Mlok comes complete with a MATCH GRAD..
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AR-15 6.5 Grendel II 16" Barrel, 1x8 Twist, Stainless Steel
AR-15 6.5 Grendel II 16" Barrel, 1x8 Twist, Stainless Steel6.5 Grendel Type II416 R Stainless SteelM..
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AR-15 6.5 Grendel II 18" Hbar Barrel, 1x8 Twist, Nitride
AR-15 6.5 Grendel II 18" Barrel, 1x8 Twist, Nitride18" length6.5 Grendel Type II4150 Steel, Black Ni..
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AR-15 6.5 Grendel Type II Bolt Carrier Group – .136 Face Depth | Nitride
Upgrade your AR-15 for 6.5 Grendel Type II with this high-performance bolt carrier group (BCG), engi..
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AR-15 6.5 Grendel Type II Stripped Bolt - Precision Engineered for Performance
If you're building or upgrading a 6.5 Grendel AR platform, Moriarti Armaments offers the perfect sol..
AR-15 6.8 SPC II / .224 Valkyrie Complete Bolt Assembly | MPI Tested | 9310 Steel
Upgrade your AR-15 with the Moriarti 6.8 SPC II / .224 Valkyrie Complete Bolt Assembly, precision ma..
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AR-15 6.8 SPC II 16" Rifle Builder Kit | Quad Rail, LE Stock, USA Made – Moriarti Armaments
Build your next AR-15 with the Moriarti Armaments AR-15 6.8 SPC II 16" Rifle Builder Kit. Engineered..
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AR-15 6MM ARC 16" MLOK UPPER ASSEMBLY WITH SLIP OVER BARREL SHROUD
Perfect for your next build, this 16" MLOK Upper Assembly is designed to give your AR-15 a sleek, ve..
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AR-15 7.62x39 10.5" HBAR Barrel, Carbine Length Gas System, 1-10 Twist
The AR-15 7.62x39 10.5" HBAR Barrel is built for precision, durability, and reliability in your next..
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AR-15 7.62x39 10.5" Pistol Upper / 7" Fake Can / 1:10 Twist / 10" M-LOK Free Float – Moriarti Arms
The Moriarti Arms 7.62x39 AR-15 10.5" Pistol Upper Assembly is a rugged, USA-made upgrade designed f..
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AR-15 7.62x39 10.5" Pistol Upper / Slim Cone Brake / 12" M-LOK Rail – Moriarti Arms
The Moriarti Arms AR-15 7.62x39 10.5” Pistol Upper Assembly offers the perfect compact power solutio..
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AR-15 7.62x39 16" BARRETT STYLE 15" LIGHTWEIGHT MLOK UPPER
Features:Barrel Length: 16"Gas System: Carbine LengthBarrel Steel: 4150V Chrome Moly VanadiumBarrel ..
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AR-15 7.62x39 16" Burnt Bronze Upper | M-LOK Handguard | Moriarti Arms
Unleash the performance of the 7.62x39mm cartridge in your AR-15 platform with the Moriarti Arms® AR..
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AR-15 7.62x39 16" Elite Upper | Blue Titanium Cerakote | 1:10 Twist | 15" M-LOK | Moriarti Arms
The AR-15 7.62x39 Elite 16" Upper in Blue Titanium Cerakote is a striking and rugged option for buil..
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AR-15 7.62X39 16" HBAR BARREL, NITRIDE, 1X10
Upgrade your AR-15 build with the AR-15 7.62x39 16" HBAR Barrel. Crafted from 4150 Chrome Moly Vanad..
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AR-15 7.62x39 16" Lightweight Blue Upper Assembly with Triport Muzzle Brake
AR-15 7.62x39 16" Lightweight Blue Upper Assembly with Triport Muzzle Brake - Compatible with AR-15 ..
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AR-15 7.62x39 16" Side Charging Upper / Carbine Gas / 15" M-LOK / BCG Included – Moriarti Arms
Step up your AR build with the Moriarti Arms AR-15 7.62x39 16” Side Charging Complete Upper Receiver..
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AR-15 7.62x39 16" Stainless Bear Claw Upper / Spiral Fluted Barrel / M-LOK / Triport Muzzle – Moriarti Arms
Push your AR-47 platform further with the Moriarti Arms 16" Stainless Bear Claw Premium Upper. Engin..
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AR-15 7.62x39 16" Upper Assembly / Multi-Port Shroud / M-LOK / Clear White – Moriarti Arms
Compliant. Unique. Purpose-built. This AR-15 7.62x39 16" Upper Assembly in anodized clear white adds..
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AR-15 7.62x39 16" Upper Assembly with Shark Muzzle Brake, FDE M-LOK | Moriarti Arms
Upgrade your AR build with the Moriarti Arms® AR-15 16" 7.62x39 Upper Assembly in Lightweight FDE Ce..
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AR-15 7.62x39 7.5" Krinkov Style Slim Nitride Pistol Upper Assembly / M-LOK – Moriarti Arms
Enhance your AR-15 pistol with the 7.62x39 7.5" Krinkov Style Slim Nitride Pistol Upper Assembly by ..
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AR-15 7.62x39 7.5" Pistol Build Kit / Mlok / SBA3 / No Lower
AR-15 7.62x39 7.5" Pistol Build Kit / Mlok / SBA3 / Shortie contains all components to complete..
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AR-15 7.62X39 7.5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 7" HANDGUARD - SHOCKWAVE - CERAKOTE CAMO
AR-15 7.62X39 7.5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 7" HANDGUARD - SHOCKWAVE - CERAKOTE CAMOA..
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AR-15 7.62x39 7.5" Slim Nitride Upper Assembly with Cerakote – FDE, ODG, Grey | Moriarti Arms
Upgrade your AR-15 with the 7.62x39 7.5" Slim Nitride Upper Assembly, now available with your choice..
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AR-15 7.62x39 7.5" Tactical Pistol Kit – 7" M-LOK Rail, BCG & LPK Included, USA Made
The AR-15 7.62x39 7.5" Tactical Pistol Kit is your ready-to-build solution for launching a compact, ..
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AR-15 7.62x39 7.5" Ultralight Series Pistol Kit – Choose Your Color (No 80% Lower Included)
Get ready to dominate the range with the 7.62x39 Ultralight Series Pistol Kit. If you're lookin..
AR-15 7.62x39 Complete Bolt Assembly – 9310 Steel | MPI Tested
Upgrade or replace the bolt in your 7.62x39 AR-15 / AR-47 with this complete, ready-to-install 7.62x..
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AR-15 80% Lower Receiver - 4th of July Limited Edition - Life Liberty Engraving
This Anodized 80% Lower Receiver comes with a limited time 4th of July graphic of your choice engrav..
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AR-15 80% Lower Receiver - Choose Color | Cerakote | 7075-T6 Forged Receiver
This AR-15 80% lower receiver is crafted from 7075-T6 aluminum forgings and finished in a durable Tu..
AR-15 A2 buttstock assembly kit
Standard A2 Butt Stock Assembly Stock Molded from Impact Resistant Advanced Polymer Complete wit..
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AR-15 A2 MIL-SPEC STYLE PISTOL GRIP
A2 StyleHigh Density PolymerTotal Weight : 3 ozMil-Spec..
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AR-15 A2 Rifle Buffer Spring – Full Length, Steel, Made in USA
This AR-15 A2 Rifle Buffer Spring is designed for use with full-size, fixed rifle stock systems. Man..
AR-15 AMBI CHARGING HANDLE LATCH
Fits Any AR-15 Mil Spec Charging HandleAmbidextrousT6 6061 AluminumUS Made..
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AR-15 AMBIDEXTROUS CHARGING HANDLE / ALUMINUM BLACK
AR-15 AMBIDEXTROUS CHARGING HANDLE / ALUMINUM BLACKMil-Spec6061-T6 Aircraft AluminumBlack Oxide Fini..
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AR-15 AMBIDEXTROUS CHARGING HANDLE / ALUMINUM BLACK / PINK LATCH
AR-15 AMBIDEXTROUS CHARGING HANDLE / ALUMINUM BLACK AND PINKFinish: Type III hard-coat anodizedPerfe..
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AR-15 AMBIDEXTROUS CHARGING HANDLE / ALUMINUM BLACK / SPIDER
Upgrade your rifle with the AR-15 Ambidextrous Charging Handle, engineered for smooth operation from..
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AR-15 Anodized 80% Lower Receiver – MIL-SPEC 7075-T6 Forging
Moriarti's anodized AR-15 80% lower receivers are designed with the DIY gunsmith in mind. Constructe..
AR-15 Anodized Charging Handle with Factory Latch - Choose Color
AR-15 Charging Handle In Anodized FinishMilspec LatchUS MadeT6 AluminumSmooth FinishAR-15 PlatformMa..
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AR-15 AR-15 Lower Parts Kit / Cerakote RED
AR-15 AR-15 Lower Parts Kit / Cerakote RED - Moriarti Armaments' AR-15 Lower Parts Kit elevates..
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AR-15 Barrett Style "Tanker" Muzzle Brake | Extended Length | Cerakote Camo FDE, Red, or Pink
Elevate your AR-15's performance with the Barrett Style "Tanker" Extended Length Muzzle Brake, desig..
AR-15 Billet Upper Receiver with Dust Cover & Forward Assist - Flat Dark Earth
Enhance your AR-15 build with this Billet Upper Receiver featuring a Cerakote Flat Dark Earth finish..
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AR-15 Carbine Buffer Spring
The AR-15 Carbine Buffer Spring is designed to work with all standard AR-15 models and is compatible..
AR-15 Charging Handle - Rainbow PVD Coated
AR-15 Charging HandleT6 6061 AluminumMil-SpecWith Factory Mil-Spec LatchMatte Rainbow PVD Coated Fin..
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AR-15 COMPLETE LOWER PARTS KIT WITH ERGONOMIC POLYMER PISTOL GRIP
AR-15 COMPLETE LOWER PARTS KIT WITH ERGONOMIC POLYMER PISTOL GRIP U.S.A. Made Lower Parts Kit Inc..
AR-15 COMPLETE LOWER PARTS KIT WITH TRIGGER GUARD AND MAGPUL MOE GRIP
KIT INCLUDES: Magpul Moe Pistol Grip (comes in black by default, you may choose a M..
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AR-15 Complete Micro Compact Buffer Tube 3.5'' | Choose Cerakote Color
Features:Material: 7075-T6 AluminumFinish: Choose ColorLength: 3.5” estimate depending on the lower...
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AR-15 COMPLETE PISTOL SHORTIE – 7.5 INCHES / 7.62x39 / M-LOK RAIL / AERO PRECISION LOWER
AR-15 COMPLETE PISTOL – 7.5 INCHES / 7.62x39 / M-LOK RAIL / AERO PRECISION LOWER / SBA3 BRACE. FFL t..
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AR-15 Custom .350 Legend 12.5" Upper Assembly | M-LOK | A2 Flash Hider
Upgrade your AR-15 with this .350 Legend 12.5" Upper Assembly, specifically designed for those who d..
AR-15 Delta Ring Assembly - Mil-Spec, Complete Set with Delta Ring, Weld Spring, Snap Ring, and Barrel Nut
The AR-15 Delta Ring Assembly is a Mil-Spec set designed to replace or upgrade your AR-15’s handguar..
AR-15 Enhanced Trigger Guard - Multiple Colors Available
The AR-15 Enhanced Trigger Guard is a must-have for any shooter looking to improve the comfort and f..