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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Moriarti Armaments MA15 Mil-Spec Complete Lower Receiver – Semi-Automatic, Multi-Caliber, Pistol Build, Black Finish
Moriarti Armaments MA15 Mil-Spec Complete Lower Receiver – The ultimate foundation for your AR-15 bu..
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Moriarti Arms Stripped AR-15 Lower Receiver - Forged, Anodized, Mil-Spec, Multi Caliber
The Moriarti Arms Stripped AR-15 Lower Receiver is a high-quality, mil-spec forged lower that delive..
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Moriarti Dedicated 22 LR Stainless Steel Bolt Group - Complete
Great for any .22LR enthusiast. This .22AR Bolt Group was developed to provide a long lasting and re..
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Moriarti Diamond Series .50 Beowulf 10.5" AR-15 Upper Assembly – 10" M-LOK
The Moriarti Diamond Series .50 Beowulf 10.5" Upper Assembly features a heavy-profile 4150 Chrome Mo..
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Moriarti MA-15 .338 ARC 10.5" M-LOK Pistol w/ SBA3 Brace | Semi-Auto, Anodized Black
Key Features Chamber: 338 ARC Action: Semi-auto direct impingement for reliable and smooth..
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Moriarti MA-15 .350 Legend 10.5" Semi-Auto Pistol – M-LOK, SBA3 Brace
The Moriarti MA-15 .350 Legend 10.5" Semi-Automatic Pistol features a heavy-profile 4150 Chrome Moly..
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Moriarti MA-15 .450 Bushmaster 16" Semi-Auto Rifle – Tanker Brake, Magpul MOE
The Moriarti MA-15 .450 Bushmaster 16" Semi-Automatic Rifle is a big-bore AR-15 platform firearm fea..
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Moriarti MA-15 .458 SOCOM 16" Semi-Auto Rifle – 15" M-LOK, Magpul MOE
erMoriarti ArmamentsModelMA-15Product CodeMA15-458-16-RFLPlatformAR-15Caliber.458 SOCOMActionSemi-Au..
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Moriarti MA-15 5" Micro ARP Pistol | Mil-Spec Buffer | SBR Ready | Choose Caliber & Color
The Moriarti Micro ARP AR-15 5" Semi-Auto Pistol is built for shooters who demand premium performanc..
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Moriarti MA-15 5.56 NATO 16" Camo Rifle – 15" AIR-LOK M-LOK Handguard
The Moriarti MA-15 Camo Rifle is a semi-automatic AR-15 platform rifle chambered in 5.56 NATO and co..
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Moriarti MA-15 5.56 NATO 5″ Micro Mini Series Pistol – Choose Color
The Moriarti MA-15 Micro Mini Series is a compact AR-platform semi-automatic pistol chambered in 5.5..
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Moriarti MA-15 6.5 Grendel 10.5" M-LOK Pistol w/ SBA3 Brace | Semi-Auto, Anodized Black
Key Features Chamber: 6.5 Grendel for superior long-range performance Action: Semi-auto di..
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Moriarti MA-15 6.5 Grendel 16" Straight-Fluted Stainless Rifle
The Moriarti MA-15 is a complete semi-automatic AR-15 platform rifle chambered in 6.5 Grendel. This ..
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Moriarti MA-15 7.5" Left-Hand AR-15 Pistol – Billet Slick-Side Upper, SBA3
The Moriarti MA-15 7.5" Left-Hand Semi-Automatic Pistol is an AR-15 platform firearm featuring a lef..
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Moriarti MA-15 Airlight 7.62×39 16" Suppressor Ready Rifle
The Moriarti MA-15 Airlight 7.62×39 is a semi-automatic AR-15 platform firearm featuring a 16-inch 4..
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Moriarti MA-15 Complete Pistol Lower Receiver with SB Tactical HBPDW Brace, FDE
Key Features Material: Constructed from 7075 T6 aluminum forgings for maximum strength and reliab..
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Moriarti No-Logo AR-15 Stripped Lower Receiver & Rare Breed FRT-15L3 Flat Straight Trigger
The Moriarti No-Logo AR-15 Stripped Lower Receiver & Rare Breed FRT-15L3 Flat Straight Trigger p..
PROMAG AR15 7.62X39 50RD DRUM BLK
This ProMag drum magazine fits AR-15 Pattern Firearms Chambered in 7.62X39mm, takes 7.62X39mm and ho..
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AR-15 Left Hand 10.5" Moriarti 5.56 NATO Slim Tactical M-LOK Upper Assembly
Upgrade your AR-15 platform with the Moriarti Armaments 10.5" 5.56 NATO Slim Tactical M-LOK Upper As..
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AR-15 Left Hand 5" Slick Side Micro M-LOK Upper Assembly - Choose Caliber
Upgrade your AR-15 platform with the Moriarti Armaments AR-15 Left Hand 5" Slick Side Micro M-..
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AR-15 T6 Aluminum Adjustable Sniper Grip – Gen 2 | Matte Black
Upgrade your AR-15 rifle with the Gen 2 T6 Aluminum Adjustable Sniper Grip, engineered for precision..
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.450 Bushmaster 10.5" AR-15 Upper Assembly – Magnum Linear Comp
The Moriarti .450 Bushmaster 10.5" Magnum Upper Assembly combines a heavy-profile barrel, forged big..
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.450 Bushmaster 16" Stainless Series AR-15 Upper Assembly – 12" Diamond Cut M-LOK
The Moriarti .450 Bushmaster 16" Stainless Series Upper Assembly features a 16-inch heavy-profile 41..
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.458 SOCOM 10.5" Tanker Upper – Color Series
The Moriarti .458 SOCOM 10.5" Tanker Upper combines big-bore AR-15 performance with distinctive styl..