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.
Refine Search
-47%
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
A mil-spec AR-15 charging handle with a matte rainbow PVD coating. It is T6 6061 aluminum with a fac..
-29%
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..
-456x456.webp "AR-15 Complete Micro Compact Buffer Tube 3.5'' | Choose Cerakote Color")
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...
-44%
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..
AR-15 Extended Bolt Catch Release - Contoured Design - Choose Your Color
The AR-15 Extended Bolt Catch Release is designed for enhanced performance and quick, one-handed ope..
AR-15 Extended Lower Takedown Pin Set - Front & Rear - G2 - Choose Color
Key Features: Extended Takedown Pins: The set includes both the front and rear extended takedow..
AR-15 EXTENDED TAKEDOWN PIN SET / CERAKOTE COLOR OPTIONS
CHOOSE YOUR CERAKOTE COLOR ON TOP OF PAGE.The extended and grooved head on the pin makes separating ..
-456x456.webp "AR-15 Fear Nothing and Love Everything Engraving - Blue / Black")
-35%
AR-15 Fear Nothing and Love Everything Engraving - Blue / Black
Elevate your AR-15's look and mindset with the "Fear Nothing and Love Everything" engraved Ejection ..
-20%
AR-15 Finishing Kit | Black Chrome | Includes Ambi Safety, Charging Handle, & More
Enhance your AR-15 build with the AR-15 Finishing Kit in Black Chrome, a complete parts kit designed..
AR-15 Finishing Kit | Chrome Finish | Includes Ambi Safety, Charging Handle, & More
Upgrade your AR-15 build with the AR-15 Finishing Kit in Chrome Finish, a complete parts kit designe..
-1000x1000-456x456.webp "AR-15 Flat Top A2 Carry Handle - Black, Mil-Spec Rear Sight")
-40%
AR-15 Flat Top A2 Carry Handle - Black, Mil-Spec Rear Sight
Elevate your AR-15 with this high-quality A2 Carry Handle, designed for precision and durability. Co..
AR-15 Geissele Automatics Super Charging Handle - Black
The Geissele Automatics Super Charging Handle is a fully ambidextrous, dual-levered, gas-busting cha..
-30%
AR-15 H2 Carbine Buffer Tube Kit w/ Standard End Plate - Force Reset Trigger Ready
An AR-15 carbine buffer tube kit with an H2 buffer. The mil-spec 6-position tube comes with a 4.6 oz..
-36%
AR-15 LE M4 6 POSITION MIL-SPEC STOCK KIT
AR-15 LE M4 6 POSITION MIL-SPEC STOCK KIT - The L-E stock was designed to conform with design parame..
-19%
AR-15 Left Hand 10.5" 7.62x39mm Slim Tactical M-LOK Upper Assembly, 4150 CMV 1:10 Twist, Carbine-Length Gas System
Upgrade your AR-15 with the Left Hand 10.5" 7.62x39mm Slim Tactical M-LOK Upper Assembly, built for ..
-20%
AR-15 Left Hand 7.5" 7.62x39mm Slim M-LOK Upper Assembly, 4150 CMV 1:10 Twist, Pistol-Length Gas System
Enhance your AR-15 with the Left Hand 7.5" 7.62x39mm Slim M-LOK Upper Assembly. Designed specificall..
AR-15 Low Concussion Muzzle Brake 1/2x28 Pitch TPI Knurled - 6 ports
The "Low Concussion" muzzle brake is designed with Compact design for CQB and Tactical Low..
-30%
AR-15 Lower Parts Kit / Cerakote Pink
U.S.A. Made Lower Parts Kit Includes the following:CERAKOTE PINK Pistol Grip CERAKOTE..
-30%
AR-15 Lower Parts Kit / Cerakote Tiffany Blue
AR-15 Lower Parts Kit / Cerakote Tiffany Blue U.S.A. Made Lower Parts Kit Includes the following:..
AR-15 Lower Parts Kit / OD GREEN Magpul Grip / Drop-In Trigger
AR-15 Lower Parts Kit / OD GREEN Magpul Grip / Drop-In Trigger Our AR-15 Lower Receiver Par..