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/.223 16" yellow diamond modular bull upper assembly
AR-15 5.56/.223 16" yellow diamond modular bull upper assembly is offered exclusively by Moriarti Ar..
AR-15 5.56/.223 24" black nitride bull upper assembly / 15" Mlok
Maximize Precision with the AR-15 5.56/.223 24" Black Nitride Modular Bull Upper AssemblyTake your s..
AR-15 5.56/.223 24" Spiral Black Claw stainless upper assembly / Bull / Mlok
AR-15 5.56/.223 24" Black Claw stainless steel fluted upper assembly includes: Barrel - 24" 416..
AR-15 5.56/.223 WYLDE 16" DIAMOND FLUTED STAINLESS STEEL BARREL, 1X8
AR-15 5.56 16" DIAMOND FLUTED STAINLESS STEEL HBAR BARREL. MADE FROM 416R STAINLESS STEEL HARDE..
AR-15 5.56/.223 Wylde 24" Diamond Fluted Rifle Kit / 15" Slim M-LOK / Adaptive Stock / No BCG – Moriarti Armaments
Push long-range performance and accuracy to the next level with this AR-15 5.56/.223 Wylde 24" Diamo..
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AR-15 5.56/.223 Wylde 24" Spiral Fluted Nitride Rifle Kit / 15" Mlok / Adaptive Stock
AR-15 5.56/.223 Wylde 24" Spiral Fluted Nitride Rifle Kit / 15" Mlok / Adaptive Stock. The kit comes..
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AR-15 5.56/.223 Wylde, 24" Black Nitride Spiral Fluted Heavy Barrel - 1:8 Twist, Rifle Length Gas System
The AR-15 5.56/.223 Wylde 24" Black Nitride Spiral Fluted Heavy Barrel is engineered for precision a..
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AR-15 6.5 Grendel 16" Nitride Upper Assembly, Left Hand, 1:8 Twist, 15" M-LOK Free Float Handguard
The AR-15 6.5 Grendel 16" Nitride Upper Assembly (Left Hand) is the perfect drop-in solution for upg..
AR-15 7.62x39 bolt assembly LEFT HAND
The AR-15 7.62x39 Bolt Assembly – Left-Hand is the perfect upgrade or replacement part for your left..
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AR-15 Left Hand 16" 5.56 NATO Slim M-LOK Upper - 4150 CMV 1:7 Twist - Moriarti Armaments
This Left Handed AR-15 Upper offers top-tier performance with a 16" 5.56 NATO barrel, perfect for le..
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AR-15 LEO TAKEDOWN BUILD BARREL COUPLING - CHOOSE CALIBER
AR-15 LEO TAKEDOWN BUILD BARREL COUPLING - CHOOSE CALIBER - Looking for additional barrel build for ..
AR-15 LEO TakeDown Integrated Upper Kit – 7075 Billet Aluminum, Black
The AR-15 LEO TakeDown Integrated Upper Kit is the ultimate upgrade for AR-15 enthusiasts who want v..
AR-15 Micro Pistol Buffer System Kit – 5.56 & 9MM Compatible, 5.75" Tube | Mil-Spec, Color Options
Upgrade your compact AR pistol build with the AR-15 Micro Pistol Buffer System, engineered for compa..
AR-15 Moriarti Duo TakeDown 16" Carbine Upper Assembly | 5.56 Nato and 300 Blk Complete Combo
AR-15 Moriarti Duo TakeDown 16" Carbine Upper Assembly | 5.56 Nato and 300 Blk Complete Combo - you ..
AR-15 Moriarti Duo TakeDown Pistol Upper Assembly | 10.5" | 5.56 Nato and 350 Legend Complete Combo
AR-15 Moriarti Duo TakeDown Pistol Upper Assembly | 10.5" | 5.56 Nato and 350 Legend Comp..
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AR-15 Moriarti Duo TakeDown Pistol Upper Assembly | 5.56 Nato and 300 Blk Complete Combo
AR-15 Moriarti Duo TakeDown Pistol Upper Assembly | 5.56 Nato and 300 Blk Complete Combo allows for ..
AR-15 Non-Reciprocating Side Charging Billet Upper Receiver - Multi Caliber
Elevate your AR-15 platform with the Non-Reciprocating Side Charging Billet Upper Receiver from New ..
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AR-15 Polished Aluminum Lightweight Competition Bolt Carrier Group - Blue
Take your AR-15 to the next level with the Polished Aluminum Lightweight Competition Bolt Carrier Gr..
AR-15 Skeleton 80% Lower Receiver – 7075 Forged Aluminum, Multi-Caliber | Moriarti Arms
The Moriarti Arms AR-15 Skeleton 80% Lower Receiver offers a lightweight yet rugged foundation for y..
AR-15 Slim Line ‘Trident’ Flash Can with Glass Breaker | Rainbow PVD Coated | 1/2x28 Thread
The AR-15 Slim Line ‘Trident’ Flash Can with Glass Breaker combines aggressive styling and superior ..
AR-15 walking dead flash suppressor, 1/2-28 threads, stainless steel
AR-15 walking dead flash suppressor, 1/2-28 threads, stainless steelMade from solid stainless steel ..
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AR-15/AR-10 7" THREAD-ON FAKE SUPPRESSOR, 5/8x24, G2
AR-15/AR-10 7" THREAD-ON FAKE SUPPRESSOR, NITRIDE, 5/8x24, G2New and Improved Gen 2 ModelOverall Len..
AR-15/AR-9 Micro Slip Over Barrel Shroud With Multi Port Muzzle Brake - PVD
US MadeT6 AluminumNew Micro DesignTotal Weight: 3.2 ozLength: 3″Will Work On 9mm With 1/2 x 28 Threa..
AR-400 Legend 7.5" Government Profile Pistol Barrel – 1:16 Twist, 4150 CrMoV, Black Nitride
Built for short, powerful AR pistols, this 7.5” .400 Legend barrel features a Government profile, 1:..