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.
What parts do I need to build an AR-15?
A complete AR-15 build typically requires an upper assembly, lower receiver, lower parts, barrel, bolt carrier group, charging handle, stock or brace, buffer system, magazine, and compatible accessories. Product requirements may vary depending on your build configuration.
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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..
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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..
AR-15 BILLET UPPER RECEIVER WITH FORWARD ASSIST & EJECTION DOOR ASSEMBLY
Upgrade your AR-15 build with this AR-15 Billet Upper Receiver, precision machined from T6 6061 bill..
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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..
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..
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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 ..
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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 ..
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-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..
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..
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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..
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..
Sharps Bros. Showdown Stripped Billet Lower Receiver - SHRPSBLR11
The Sharps Bros. Showdown stripped billet lower receiver is built for shooters who demand both funct..
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Spike’s Tactical Calico Jack Stripped AR-15 Lower Receiver – STLS016-CFA
The Spike's Tactical Calico Jack Stripped Lower Receiver is a standout for any AR-15 build. Featurin..
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Spike’s Tactical Spider Stripped AR-15 Lower Receiver – STLS019-CFA
The Spike's Tactical Spider Stripped Lower Receiver is perfect for any AR-15 build, offering a uniqu..
VG6 Precision Epsilon 556 Compensator - 1/2x28
Manufacturer: Aero Precision The VG6 EPSILON 556 is our highest performing tactical muzzle devic..
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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..
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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..
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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..
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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..
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 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 ..
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AR-15 7.62x39 16" Carbine Kit with 12" M-Lok Handguard | Cerakote Color Options
Upgrade your AR-15 with this high-performance 7.62x39 Carbine Rifle Kit. Designed for tactical preci..
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AR-15 .223 WYLDE 16" STRAIGHT FLUTED BULL BARREL; SS, 1:8 TWIST
AR-15 .223 WYLDE 16" STRAIGHT FLUTED BULL BARREL; SS, 1:8 TWIST. MADE IN USA Barrel leng..
AR-15 5.56 16" stainless steel bull barrel diamond pulse fluted / 1x9
AR-15 5.56 16" stainless steel bull barrel diamond pulse fluted. MADE FROM 416 STAINLESS STEEL HARDE..
-228x228.webp "AR-15 5.56 16\" stainless steel bull barrel x-treme spiral pulse fluted, 1-9")
AR-15 5.56 16" stainless steel bull barrel x-treme spiral pulse fluted, 1-9
AR-15 16" stainless steel bull barrel x-treme spiral pulse fluted. Chambered in 5.56 nato (also acce..
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AR-15 6.5 Grendel 24" Competition Upper Assembly | Fluted | M-LOK | Triport Muzzle Brake
Transform your AR-15 into a 6.5 Grendel powerhouse with this 24" competition upper assembly. Built f..
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AR-15 6.5 Grendel 24" Stainless Steel Upper Assembly | M-LOK | Thread Protector
Transform your AR-15 into a precision 6.5 Grendel with this 24" stainless steel upper assembly. This..
Moriarti AR-15 5.56 NATO 16" Black Diamond Fluted Heavy Barrel | 1:9 Twist | 416R SS | Carbine Gas
Unleash accuracy and durability with the Moriarti AR-15 16" Black Diamond Fluted Heavy Barrel, craft..