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.
Refine Search
-90x90.webp)
-33%
AR-15 7.62x39 18" Rifle Build Kit – 15" M-Lok Handguard | Wolff Heavy Spring Enhanced Performance
AR-15 7.62x39 18" Rifle Build Kit – 15" M-Lok Handguard | Wolff Heavy Spring Enhanced PerformanceBui..
-40%
AR-15 6.5 Grendel 18" Stainless Upper Assembly | M-LOK Handguard | Mid-Length Gas System
Take your shooting game to the next level with the AR-15 6.5 Grendel 18" Stainless Steel Upper Assem..
AR-15 16.5" AIR-LOK Series M-LOK Compression Free Floating Handguard With Monolithic Top Rail - Choose Anodized Color - US Made
The AR-15 16.5" AIR-LOK Series M-LOK Compression Free Floating Handguard with a Monolithic Top ..
-42%
AR-15 6.5 Grendel 20" Black Diamond Stainless Upper Assembly | M-LOK Handguard | Triport Muzzle Brake
Elevate your AR-15 with the 6.5 Grendel 20" Black Diamond Stainless Steel Upper Assembly from Moriar..
-42%
AR-15 6.5 Grendel 20" Diamond Fluted Stainless Upper Assembly | M-LOK | Triport
Enhance your AR-15 build with the AR-15 6.5 Grendel 20" Diamond Fluted Stainless Steel Upper Assembl..
-40%
AR-15 6.5 Grendel 20" Spiral Fluted Stainless Steel Upper Assembly | 15" M-LOK Handguard
Upgrade your AR-15 with this custom 6.5 Grendel 20" Spiral Fluted Stainless Steel Upper Assembly, de..
-40%
AR-15 6.5 Grendel 20" Stainless Straight Fluted Competition Upper Assembly | M-LOK Handguard
Take your precision shooting to new heights with the AR-15 6.5 Grendel 20" Stainless Steel Straight ..
-45%
AR-15 6.5 Grendel 22" Heavy Barrel Upper | Rifle Length Gas | M-LOK
Upgrade your AR-15 with this 6.5 Grendel 22" heavy barrel upper assembly, designed for precision sho..
AR MAGPUL MOE SL-K CARBINE STOCK / MIL-SPEC / ODG, Black, FDE
AR MAGPUL MOE SL-K CARBINE STOCK – MIL-SPEC. Available in ODG, Black and FDE. Please choose your col..
-62%
AR-15 5.56 Bolt Assembly – High-Quality Mil-Spec Performance
Upgrade your AR-15 with this durable and reliable 5.56 Bolt Assembly, designed for high-performance ..
AR-15 5.56/.223 Mag Hexmag Series 2 10/30-Round Polymer Magazine
NOTE: This is a 10-Round Magazine in a 30-Round Body.223/5.56 NatoPatented PolyHex2 fiber-reinforced..
-30%
AR-15 6.5 Grendel 24" Competition Upper Assembly | Nitride Barrel | M-LOK | Tanker Muzzle Brake
Transform your AR-15 into a 6.5 Grendel with this 24" competition upper assembly. Designed for high-..
-20%
Mission First Tactical MFT EXD 30-Round Magazine for AR-15 – 223 Remington/5.56 NATO
The Mission First Tactical EXD 30-Round Magazine is engineered to provide enhanced strength, durabil..
AR-15 6-Position Butt Stock Assembly - Mil Spec
6-Position AR15/M4 Carbine Stock - Complete Kit - (BLACK) Complete stock kit for AR-15 includes Pol..
-38%
AR-15 Ambidextrous Charging Handle - CERAKOTE RED
Our newest addition to the Charging Handle line is the AR-15 Tactical Charging Handle - Ambidextrous..
-38%
AR-15 Ambidextrous Charging Handle - PUNISHER
Our newest addition to the Charging Handle line is the AR-15 Tactical Charging Handle - Ambidextrous..
-33%
AR-15 Mil Spec Charging Handle Aluminum W/ Steel Latch
Charging handle for AR15 or M16 rifle. Mil Spec. Made in USA.AR-15 Charging HandleMil-SpecT6 6..
-228x228.webp "AR-15 Tactical Charging Handle - DON'T TREAD ON ME / USA")
-50%
AR-15 Tactical Charging Handle - DON'T TREAD ON ME / USA
Our newest addition to the Charging Handle line is the AR-15 Tactical Charging Handle - DON'T T..
AR MAGPUL ACS-L CARBINE STOCK MIL-SPEC
The Magpul ACS-L (Adaptable Carbine Stock - Light) is a drop-in replacement buttstock for AR carbine..
AR-10/AR-15 .936 Adjustable Low Profile Gas Block - Odin Works
Machined from steel and black nitrided for durability. Front facing Inconel adjustment screw and spr..
AR-15/AR-10 .750 Low Profile Gas Block – PVD Coated, Includes Pins and Wrench
Upgrade your AR build with a lightweight, precision-fit gas block. The .750 Low Profile Gas Block is..
AR-15/AR-10 .936 Low Profile Steel Gas Block with Roll Pins & Wrench
PRODUCT SPECIFICATIONSThis is our .936" diameter Low Profile Gas Block designed to accommodate ..
AR-15/AR-10 AERO PRECISION ADJ LOW PROFILE GAS BLOCK / .936 / NITRIDE
Machined from 4140 steelCompatible with barrels utilizing a .936 gas block journalNitride coatedAtta..
-17%
AR-15 Ejection Port Dust Cover Assembly
Upgrade your AR-15 with this complete ejection port dust cover assembly, designed for .223 caliber r..
AR-15 EJECTION PORT DUST COVER ASSY / LASERED TRUMP 2024 / CHOOSE COLOR
Show your support with this AR-15 Ejection Port Dust Cover Assembly, proudly engraved with "Trump 20..
-31%
AR-15 Ejection Port Dust Cover Complete Assembly - Don't Tread On Me Engraving
Add a patriotic touch to your AR-15 with this complete ejection port dust cover assembly featuring t..
AR-15 5.56x45/.223 Magpul PMAG 10 Round Magazine
The PMAG 10 AR/M4 GEN M2 MOE is a 10-round 5.56x45 NATO (.223 Remington) AR15/M4 compatible magazine..
AR-15 Forward Assist Assembly | Mil-Spec | Complete Assembly - US Made
Ensure smooth, reliable operation of your AR-15 with this Mil-Spec Forward Assist Assembly. Designed..
AR-15/AR-10 FORWARD ASSIST ASSEMBLY - Gold Plated
US MadeGold Plated Finish.223 Cal / .308 calMil-SpecIncludes Button, Spring, And PinComplete Forward..
AR-15/AR-10 FORWARD ASSIST ASSEMBLY / ENGRAVED DESIGN / VARIOUS COLORS
Unique engraved designDrop-in replacementRoll pin and spring includedSPECIFICATIONS:Material: 4..
AR-15/AR-10 FORWARD ASSIST ASSEMBLY / RAINBOW PVD COATED
Add a unique, custom touch to your AR-15 with this Rainbow PVD Coated Forward Assist Assembly. Desig..
ASC 10 Round 6MM ARC Magazine | Stainless Steel | Anti-Tilt Follower
The ASC 10 Round 6MM ARC Magazine is precision-engineered to deliver exceptional reliability and per..
CMMG 10-Round Magazine – .22 LR, Polymer, Fits AR-15, Gray
The CMMG 10-Round Magazine is designed specifically for AR-15 rifles using CMMG's 22LR AR conversion..
CMMG 22LR 25-Round Magazine for CMMG Conversion Kit
The CMMG 22LR 25-Round Magazine is designed for CMMG 22LR AR conversions. Made from durable polymer ..
CMMG MK4/AR-15 5.7x28mm 32-Round Magazine – Upgraded Feed Lips, Matte Finish
The CMMG MK4/AR-15 5.7x28mm 32-Round Magazine has been redesigned for enhanced reliability and perfo..
-60%
AR-15 A2 BUFFER - FULL SIZE BUFFER
A2 Rifle Length5.1 ozMil -specFull Size BufferMax quantity per order - 5Please note, color may vary ..
AR-15 Heavy Stainless Steel Carbine Buffer 4.3oz - 458 Socom/450BM/50BEU
There are many ways to smooth the operation of a AR-15 Carbine. One of the most cost effective and q..
DURAMAG 10-Round Magazine – 6.8 SPC/224 Valkyrie, Stainless Steel, Black
The DURAMAG 10-Round Magazine for 6.8 SPC or 224 Valkyrie is built for extreme reliability. Featurin..
DURAMAG 7.62X39 10-Round Magazine for AR Rifles
The DURAMAG 7.62X39 10-Round Magazine is engineered for AR rifles, offering unmatched reliability an..
MORIARTI AR-15 H2 Carbine Buffer - FRT Compatible
This carbine length heavy collapsible stock buffer assembly provides smoother function and helps to ..
-34%
MORIARTI AR-15/M4 CARBINE BUFFER - 3 OZ
Carbine lengthAR-15 / M4 Standard BufferBlack Finish3 oz weightMil-specMade in U.S.A...
AR-15/AR-10 Multi Degree Short Throw Ambi Safety - Choose Your Color
Upgrade your AR-15 or AR-10 with the Multi Degree Short Throw Ambi Safety. This ambidextrous safety ..
AR15 Enhanced Accessory Kit - Choose Color
The AR15 Enhanced Accessory Kit offers everything you need to take your AR-15 build to the next leve..
AR-15 5.56 Cal Extended Takedown Pin Set - Front & Rear - Tin Coated
Upgrade your AR-15 with the 5.56 Cal Extended Takedown Pin Set, designed for fast and easy disassemb..
AR-15 Extended Bolt Catch Release - Ergonomic Contoured Design, Multiple Anodized Colors
Enhance your AR-15’s functionality with the Extended Bolt Catch Release. Designed for improved ergon..
-228x228.webp "AR-15 Extended Ergonomic Bolt Catch - Available in Chrome, Black Chrome, FDE, PVD, Gold Plated")
-228x228.webp "AR-15 Extended Ergonomic Bolt Catch - Available in Chrome, Black Chrome, FDE, PVD, Gold Plated")
AR-15 Extended Ergonomic Bolt Catch - Available in Chrome, Black Chrome, FDE, PVD, Gold Plated
Enhance the functionality and aesthetics of your AR-15 with the Extended Ergonomic Bolt Catch. Made ..
AR-15 Extended Lower Takedown Pin Set - Front & Rear - FDE or Black - G1
The AR-15 Extended Lower Takedown Pin Set is the perfect upgrade for your AR-15 build, offering enha..
AR-15/AR-10 Complete Anti-Rotation Trigger/Hammer Pin Set - Choose Color | US Made
The AR15 Complete Anti-Rotation Trigger/Hammer Pin Set is designed to improve the reliability and pe..
-37%
AR-15/AR-10 Complete Anti-Rotation Trigger/Hammer Pin Set | Anti-Rotation Locking Cam Pins | Anodized Black
Upgrade your AR-15/AR-10 with this Complete Anti-Rotation Trigger/Hammer Pin Set designed to provide..
AR-15 Lower Receiver Spring Replacement Kit – 10-Piece Detents & Springs Set, USA Made
The AR-15 Lower Receiver Spring Replacement Kit from Moriarti Armaments is a must-have for any build..