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 16" STAINLESS BLACK CLAW UPPER ASSEMBLY / 12" MLOK
AR-15 300 BLK 16" STAINLESS BLACK CLAW PREMIUM UPPER ASSEMBLY / MLOK Barrel - 16" 416R stainles..
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AR-15 300 Blackout 16" Stainless Steel Diamond Fluted Upper Assembly – Left Hand / MLOK Rail
The AR-15 300 Blackout 16" Stainless Steel Diamond Fluted Upper Assembly is designed to provide high..
AR-15 300 Blackout 16" stainless steel spiral fluted barrel , 1-7 , carbine
AR-15 300 Blackout 16" stainless steel spiral fluted barrel 1-7 twist. MADE FROM 416R STAINLESS STEE..
AR-15 300 Blackout 16" Stainless Steel Straight Fluted Barrel - 1:7 Twist, Carbine Gas System
Enhance your AR-15 build with the 300 Blackout 16" stainless steel barrel, designed for superior per..
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AR-15 300 Blackout 16" Stainless Straight Fluted M-LOK Upper | Moriarti Arms
Step into the world of subsonic and supersonic performance with the Moriarti Arms AR-15 300 Blackout..
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AR-15 300 Blackout 16" Stainless Straight Fluted Upper Assembly – Left Hand / Slick Side / MLOK Rail
The AR-15 300 Blackout 16" Stainless Straight Fluted Upper Assembly is the perfect choice for left-h..
AR-15 300 Blackout 6" Barrel / 4150 CMV / Med Profile / Nitride
AR-15 300 Blackout 6" Barrel / 4150 CMV / Med Profile / Nitride6" MED PROFILE 1:7 TWIST4150 CMVNITRI..
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AR-15 300 Blackout 6" Modular Pistol Upper Assembly / Hybrid Mlok / A2
AR-15 300 Blackout 6" Modular Pistol Upper Assembly | Hybrid MLOK | A2 Flash HiderFeatures:Premium B..
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AR-15 300 Blackout 7.5" Pistol Kit - Cerakote Camo Options, Customizable in Tiffany Blue, Red, Pink, White, and Orange
Ready to build your dream 300 Blackout AR-15 Pistol? Our AR-15 7.5" Pistol Kit offers you everything..
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AR-15 300 Blackout 7.5" Pistol Kit - Side Cut Billet Upper with 7" Handguard - Cerakote Color Options
Unlock your next AR-15 300 Blackout build with our 7.5" Pistol Kit featuring a Side Cut Billet Upper..
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AR-15 300 BLACKOUT 7.5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 7" HANDGUARD - SHOCKWAVE - CERAKOTE CAMO
AR-15 300 BLACKOUT 7.5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 7" HANDGUARD - SHOCKWAVE - CERAKOTE ..
AR-15 300 Blackout 9" HEAVY BARREL; 4150 CMV 1:7 TWIST
AR-15 300 Blackout 9" HEAVY BARREL; 4150 CMV 1:7 TWIST 9" HEAVY CONTOUR WITH 1:7 TWIST4150 CMV S..
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AR-15 350 Legend 16" M4 Classic Tactical Rifle Kit / 12" Mlok / LE Stock
Ready to build your custom .350 Legend AR-15? The 16" .350 Legend M4 Classic Tactical Rifle Kit from..
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AR-15 350 Legend 18" Upper Assembly / Left Hand / Slick Side / 15" Free Float Rail
Supercharge your AR-15 with the 350 Legend 18" Upper Assembly, designed specifically for left-handed..
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AR-15 5" 5.56 NATO PISTOL KIT / MLOK / CERAKOTE ACCENT / CLASSIC
AR-15 5" 5.56 NATO PISTOL KIT / MLOK / CERAKOTE ACCENT / CLASSIC. The kit comes WITHOUT 8..
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AR-15 5.56 16" Complete Airlight Series Rifle Kit - Left Hand | Various Colors
The AR-15 5.56 16" Complete Airlight Series Rifle Kit is the ultimate solution for left-handed gun e..
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AR-15 5.56 16" Upper Assembly - Blue Titanium Cerakote, M-Lok Handguard, A2 Flash Hider
The AR-15 16" 5.56 Upper - Blue Titanium Cerakote is designed for shooters seeking durability a..
AR-15 5.56 CAL 5.5" Fake Suppressor | Barrel Extension | Choose Color | 1/2x28 TPI
Add a tactical flair to your AR-15 with the 5.56 CAL 5.5” Fake Suppressor. Constructed from T6 alumi..
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AR-15 5.56 NATO 11.5" 4150 CMV Nitride Barrel | Carbine-Length Gas System, 1/2x28 Thread
Enhance your AR-15 build with this high-performance AR-15 5.56 NATO 11.5" barrel. Crafted from 4150 ..
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AR-15 5.56 NATO 12.5" Carbine Barrel | M4 Profile, 1:8 Twist, Nitride Finish
The AR-15 5.56 NATO 12.5" Carbine Barrel is designed for shooters seeking a compact, reliable barrel..
AR-15 5.56 NATO 13.9" 4150 CMV Barrel / Pencil Profile / Mid-Length / 1:7 Twist
AR-15 5.56 NATO 13.9" 4150 CMV Barrel / Pencil Profile / Mid-Length / 1:7 Twist Manufacturer:..
AR-15 5.56 NATO 16" Carbine Length Barrel 1:7 Twist / Tin Coated
AR-15 5.56 NATO 16" Carbine Length Barrel 1:7 Twist / Tin CoatedLength: 16"5.56 NATO1:7 Twist.750" g..
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AR-15 5.56 NATO 16" Carbine Rifle Kit / 12" Mlok / LE / Color Accents - Choose Yours
AR-15 5.56 NATO 16" Carbine Rifle Kit / 12" Mlok / LE / Color Accents - Choose Yours Build your dre..
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AR-15 5.56 NATO 16" Mid Length Govt Profile Barrel 1:7 with Free Complete Bolt | Combo Deal
Upgrade your AR-15 build with the AR-15 5.56 NATO 16" Mid Length Govt Profile Barrel 1:7 and get a F..