AR-15 Build Kits
Choose from a wide variety of calibers, barrel lengths, and handguard styles to create your perfect build kit that fits your shooting style — tactical, hunting, competitive, or recreational. With top-tier parts, unbeatable pricing, and no FFL required, building your own AR-15 pistol or rifle has never been easier or more rewarding. American made parts and amazing prices. We also offer AR15 build kits in every color like Robins Egg Blue, OD Green, Zombie Green & many more!
Your rifle. Your rules. Build it your way. All kits come with a warranty
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AR15 .223 Wylde 20" SS Barrel Complete Upper Assembly
$287.99AR-15 .223 Wylde 20" SS Barrel Complete Upper Assembly-FREE SHIPPING Description: Unlock the full potential of your AR-15 with our meticulously crafted .223 Wylde 20" SS Barrel Complete Upper Assembly. Engineered for...$287.99 -
10.5" .450 Bushmaster Carbine Rear Charging Complete Upper
MSRP: $349.99$278.9916" .450 10.5" Bushmaster Carbine Rear Charging Complete Upper -FREE SHIPPING ✅ FREE SHIPPING – Assembled & Ready to Install Unleash the raw power and precision of the .450 Bushmaster with our 10.5" Carbine Rear...MSRP: $349.99$278.99 -
16" .450 Bushmaster Side Charging Upper Assembly
$296.9916" .450 Bushmaster Side Charging Carbine Upper Assembly- FREE SHIPPING! Built for Power. Engineered for Performance. Ships Assembled.✅ FREE SHIPPING Take your rifle to the next level with this 16" .450 Bushmaster Side Charging...$296.99 -
Guntec AR-15 Ultimate Rifle Kit Anodized Red
MSRP: $699.99$580.49AR-15 Anodized Red Ultimate Rifle Kit --FREE SHIPPING! AR-15 Anodized Red Ultimate Rifle Kit - a comprehensive package that combines top-tier components to deliver unparalleled performance and stunning...MSRP: $699.99$580.49 -
Guntec AR-15 Purple Anodized Ultimate Pistol Kit
MSRP: $599.99$503.99Guntec AR-15 Purple Anodized Ultimate Pistol Kit-FREE SHIPPING! Guntec USA AR-15 Anodized Purple Ultimate Pistol Kit, a meticulously crafted ensemble that combines precision engineering with a touch...MSRP: $599.99$503.99 -
On Sale
Odin Works 6.5 Grendel 16.1" Complete Upper
Now: $841.49Was: $999.00Odin Works 6.5 Grendel 16.1" Complete Upper-FREE SHIPPING Introducing the Odin Works 6.5 Grendel 16.1" Complete Upper, a pinnacle of precision engineering and performance. Crafted with meticulous attention to detail, this upper brings...Now: $841.49Was: $999.00 -
On Sale
Odin Works 9mm 7.5" Stainless Barrel Complete Billet Upper
Now: $538.19Was: $649.99Odin Works 9mm Complete Pistol Upper- FREE SHIPPING The foundation of this all new complete 9mm upper from ODIN Works is a billet upper receiver bearing the ODIN name. On the upper is an ODIN dust cover and also new from ODIN is the XCH,...Now: $538.19Was: $649.99 -
7.62x39 16" Carbine Length Side Charging Complete Upper
$305.997.62X39 16" Carbine Length Side Charging Upper-FREE SHIPPING Upgrade your rifle with this fully assembled 7.62x39 Side Charging Upper—built for rugged reliability and enhanced control. Designed for shooters who demand...$305.99 -
AR-15 Red Anodized 16″ 5.56 NATO Complete Upper w BCG
$377.96AR-15 Red Anodized 16″ 5.56 NATO Complete Upper w BCG-FREE SHIPPING Give your rifle a serious upgrade in both style and performance with the AR-15 Red 16" 5.56 NATO Complete Upper. Precision-machined and professionally...$377.96 -
AR-15 Purple 16" .300 Blackout Complete Upper
MSRP: $419.99$349.19AR-15 Purple 16" .300 Blackout Complete Upper-FREE SHIPPING Unlock the perfect blend of bold aesthetics and dependable performance with the A1Armory AR-15 Purple 16" .300 Blackout Complete Upper. Designed for shooters who...MSRP: $419.99$349.19 -
AR-15 ODG Anodized 16.5″ 5.56 NATO Complete Upper w BCG
$377.96AR-15 ODG Anodized 16″ 5.56 NATO Complete Upper w BCG-FREE SHIPPING Unleash the perfect fusion of performance, reliability, and rugged style with this OD Green Anodized 16" 5.56 NATO Complete Upper Assembly. Built for serious...$377.96 -
A1Armory Blue 16″ 5.56 NATO Complete Upper with BCG
$377.96AR-15 Blue 16″ 5.56 NATO Complete Upper with BCG-FREE SHIPPING Stand out and shoot with confidence. The AR-15 Blue 16″ 5.56 NATO Complete Upper with BCG is a precision-engineered upper receiver assembly designed for...$377.96 -
5.56 7.5" M4 Pistol Side Charging Complete Upper Assembly
MSRP: $309.99$236.695.56 7.5" M4 Pistol Side Charging Complete Upper Assembly-FREE SHIPPING Elevate your AR-15 build with our 5.56 7.5" M4 Pistol Side Charging Complete Upper Assembly—engineered for precision, reliability, and tactical superiority...MSRP: $309.99$236.69 -
.223 7.5" Pistol Side Charging Complete Upper Assembly
$278.99.223 Wylde 7.5" Parkerized M4 Barrel Pistol Side Charging Upper-FREE SHIPPING! Compact Power. Tactical Precision. Unbeatable Performance. FREE SHIPPING INCLUDED Engineered for serious shooters who demand the perfect balance of...$278.99 -
On Sale
.300 Blackout 7.5" Pistol Side Charging Complete Assembly
Now: $233.99Was: $309.99.300 Blackout 7.5" Right Side Charging Upper - FREE SHIPPING! Product Description: Upgrade your AR-15 with our cutting-edge Stealth Recon .300 Blackout 7.5" Right Side Charging Upper, engineered for precision, power, and...Now: $233.99Was: $309.99 -
AR-15 5.56 Nato 7.5" Stormtrooper White Gradient Pistol Upper
MSRP: $439.99$350.99AR-15 5.56 Nato 7.5" Stormtrooper White Gradient Pistol Upper-FREE SHIPPING Bring bold styling and tactical performance together with the AR-15 7.5" Stormtrooper White Gradient Pistol Upper. Designed for shooters who want to stand out...MSRP: $439.99$350.99 -
Guntec AR-15 Grey Anodized Ultimate Pistol Kit
MSRP: $599.99$503.96Guntec AR-15 Grey Anodized Ultimate Pistol Kit- FREE SHIPPING! Guntec AR-15 Grey Anodized Ultimate Pistol Kit – a comprehensive package that combines premium components and cutting-edge features to enhance the...MSRP: $599.99$503.96 -
Guntec AR-15 Clear Anodized Ultimate Pistol Kit
MSRP: $599.99$503.96Guntec AR-15 Clear Anodized Ultimate Pistol Kit-FREE SHIPPING! Guntec AR-15 Clear Anodized Ultimate Pistol Kit, a comprehensive package that combines cutting-edge features with precision engineering, elevating your AR-15 pistol build...MSRP: $599.99$503.96 -
Guntec AR-15 Green Anodized Ultimate Pistol Kit
MSRP: $599.99$503.96Guntec AR-15 Green Anodized Ultimate Pistol Kit-FREE SHIPPING! Guntec AR-15 Green Anodized Ultimate Pistol Kit, a comprehensive package designed to elevate your AR-15 pistol to new heights of performance and style...MSRP: $599.99$503.96 -
Guntec AR-15 Gold Anodized Ultimate Pistol Kit
MSRP: $599.99$503.96Guntec AR-15 Gold Anodized Ultimate Pistol Kit-FREE SHIPPING! Guntec AR-15 Gold Anodized Ultimate Pistol Kit – a comprehensive assembly of premium components designed to elevate your AR-15 pistol build to new heights. This...MSRP: $599.99$503.96 -
Guntec AR-15 Blue Anodized Ultimate Pistol Kit
MSRP: $599.99$503.96Guntec AR-15 Blue Anodized Ultimate Pistol Kit-FREE SHIPPING! Guntec AR-15 Blue Anodized Ultimate Pistol Kit, a comprehensive package designed to elevate your AR-15 pistol build to the next level. With a stunning anodized...MSRP: $599.99$503.96 -
Guntec AR-15 Red Anodized Ultimate Pistol Kit
MSRP: $599.99$503.96Guntec AR-15 Red Anodized Ultimate Pistol Kit- FREE SHIPPING Guntec AR-15 Red Anodized Ultimate Pistol Kit, a comprehensive package designed to elevate your AR-15 pistol build to the next level. Crafted with precision and...MSRP: $599.99$503.96 -
Guntec 5.5" AR-15 5.56 Complete Pistol Upper
MSRP: $549.99$422.09Guntec 5.5"AR-15 5.56 Compression Series Micro Pistol Upper -FREE SHIPPING! ✅ FREE SHIPPING Upgrade your AR-15 pistol build with the compact power and reliability of the Guntec 5.5" 5.56 Compression Series Micro...MSRP: $549.99$422.09 -
On Sale
Guntec AR-15 5.56 7.5" Complete Pistol Length Upper Kit
Now: $440.99Was: $549.00AR-15 5.56 7.5" Complete Pistol Length Upper Kit- FREE SHIPPING! This AR-15 Guntec Complete Upper Kit comes with an Ultra Lite MLOK Handguard, 5.56 Bolt Carrier Group, A2 Birdcage, Barrel, Charging Handle, Upper Receiver,.750 Gas Block/Gas Tube and this...Now: $440.99Was: $549.00 -
7.62x39 7.5" Pistol Length Side Charging Complete Upper
$251.097.62x39 7.5" Parkerized Heavy Barrel Side Charging Upper-FREE SHIPPING Maximize performance in a compact, rugged form. Our 7.62x39 7.5" Parkerized Heavy Barrel Side Charging Upper is purpose-built for shooters demanding power,...$251.09 -
On Sale
Guntec AR-15 9mm Complete Black Pistol Kit
Now: $584.99Was: $725.00Guntec AR-15 9mm Complete Black Pistol Kit- FREE SHIPPING! All US Made 9mm Upper Receiver US 7″ Mod Lite Series M-LOK Handguard With Barrel Nut & Hardware (GT-7MDLTE) 1/2 X 36 Slim Line Flash Cone...Now: $584.99Was: $725.00 -
Guntec AR-15 5.56 Series Micro Pistol Kit-No Lower
$701.99Guntec AR-15 5.56 Micro Pistol Kit-No Lower- FREE SHIPPING! This Guntec AR15 Complete Micro Pistol Kit comes with everything you need for your pistol build besides the lower. Mill your own 80% or have one ready to build, this is a...$701.99 -
AR-15 Alpha Stock Ambi Mil Spec Lower Parts Build Kit
$125.99AR-15 Alpha Stock Lower Build Kit ✅ FREE SHIPPING – Fast & Reliable Delivery Whether you're building your first AR-15 or completing your next lower receiver, the AR-15 Alpha Stock Lower Build Kit has everything you need...$125.99 -
On Sale
AR-15 Cobra Stock MK2 Ambi Mil Spec Lower Parts Build Kit
Now: $125.99Was: $159.99AR-15 Lower Build Kit Cobra MK2 Stock ✅ Choose Standard or Ambi Configuration✅ FREE SHIPPING Upgrade your AR-15 build with this premium Lower Build Kit featuring the Cobra MK2 6-Position Stock. Designed for reliability, fit, and...Now: $125.99Was: $159.99 -
AR-15 Lower Parts Build Kit Flat Dark Earth Minimalist Stock
$125.99RTB Lower Parts Build Kit – Mission First Minimalist Stock – Flat Dark Earth Complete Your AR-15 Lower with Confidence & Style This Right To Bear Lower Parts Build Kit is the ideal solution for anyone looking to...$125.99 -
On Sale
Odin Works 16" 223 Wylde Complete Upper
Now: $732.56Was: $900.00Odin Works 223 Wylde Assembled Complete 16" Upper- FREE SHIPPING! Odin Works 223 Wylde Assembled Complete 16" Upper, meticulously crafted to elevate your shooting experience to unparalleled heights. Engineered with precision and...Now: $732.56Was: $900.00 -
AR-15 16" .450 Bushmaster Side Charging Complete Upper Assembly
$292.49AR-15 16".450 Bushmaster Side Charging Upper Assembly- FREE SHIPPING! Take your AR-15 to the next level with the AR-15 16" .450 Bushmaster Side Charging Complete Upper Assembly, engineered for power,...$292.49 -
AR-15 5.56 NATO 16" Complete Billet Premium Upper Receiver
$485.99AR-15 5.56 NATO 16" Complete Billet Premium Upper Receiver-FREE SHIPPING The perfect upper for your lower, without all the tools required to build it. Our complete upper receivers are made from the highest quality USA produced...$485.99 -
On Sale
UAR AR-15 16" 223 Wylde Complete Upper Assembly 15" Rail
Now: $382.49Was: $499.9916″ 223 WYLDE COMPLETE UPPER ASSEMBLY, 15″ RAIL -FREE SHIPPING! Our complete upper receiver assemblies include everything you need to complete your lower receiver build. Simply slap on your lower and head out to the...Now: $382.49Was: $499.99 -
UAR AR-15 16" 223 Wylde Complete Upper Assembly 12" Rail
$377.9916″ 223 WYLDE 1/8 COMPLETE UPPER ASSEMBLY, 12″ RAIL- FREE SHIPPING Our complete upper receiver assemblies include everything you need to complete your lower receiver build. Simply slap on your lower and head out to the...$377.99 -
5.56 16" AR-15 Premium Rifle Kit —No Receiver
$566.96AR-15 5.56 16" Premium Rifle Kit-No Receiver -FREE SHIPPING Everything you need to build out a high quality AR15 carbine using whatever lower receiver you want. Built, test-fired, and quality checked in house, our AR15 rifle kits...$566.96 -
On Sale
AR15 5.56 10.5" Complete Premium Upper Receiver Assembly
Now: $464.36Was: $544.95AR15 Complete Premium Upper Receiver-5.56 w/10.5" Barrel, 9.85" MLOK Handguard FREE SHIPPING The perfect upper for your lower, without all the tools required to build it. Our complete upper receivers are made from the highest quality...Now: $464.36Was: $544.95 -
On Sale
AR-15 5.56 NATO 16" Complete Upper
Now: $440.99Was: $544.95AR15 Complete Standard Upper Receiver—5.56 - 16" Barrel, 15" MLOK Handguard-FREE SHIPPING The perfect complete upper for your lower receiver, without all the tools required to build it. Our complete upper receivers are made from the...Now: $440.99Was: $544.95 -
Guntec AR-15 Green Anodized Ultimate Rifle Kit
MSRP: $699.99$580.49Guntec AR-15 Green Anodized Ultimate Rifle Kit- FREE SHIPPING! Guntec AR-15 Green Anodized Ultimate Rifle Kit, a comprehensive package designed to elevate your AR-15 to the next level of performance and aesthetics. Crafted with...MSRP: $699.99$580.49 -
Guntec AR-15 FDE Ultimate Rifle Kit
MSRP: $718.99$602.99Guntec AR-15 Flat Dark Earth (FDE) Ultimate Rifle Kit- FREE SHIPPING! Guntec AR-15 Flat Dark Earth (FDE) Ultimate Rifle Kit, a comprehensive package designed to elevate your AR-15 platform to new heights of performance and...MSRP: $718.99$602.99
The Best American-Made AR-15 Build Kits
Our American-made build kits are crafted by gun enthusiasts, for gun enthusiasts, so you know you’re ordering the very best. Enjoy our shipping insurance, and military, firefighter, first responder, and wholesale discounts at checkout. Order your build kit today and experience A1Armory's commitment to quality.
Why Our AR-15 Build Kits Are For You!
Build your dream AR-15 with premium AR-15 build kits from A1Armory – your trusted, family-owned source for firearm parts. Our kits feature high-quality components, Mil-Spec reliability, and a variety of colors and finishes to match your style. With free shipping, unbeatable prices, and American-made parts, A1Armory is the #1 choice for shooters who demand performance, value, and trust.
Why Customers Choose A1Armory
At A1Armory.com, we’re more than just another firearms parts dealer. As a small, family-owned American business, we take pride in offering:
Top-Quality Parts – Mil-Spec AR-15 build kits designed for durability and performance.
Wide Selection – From standard black finishes to custom Cerakote and anodized colors.
Patriotic Values – A U.S.-based company built on trust, integrity, and service.
Affordable Prices – Competitive pricing without sacrificing quality.
Free Shipping & Great Service – Delivering value and reliability to every order.
When shooters want to build, customize, and personalize their AR-15, A1Armory is the go-to source for parts that perform and a company they can trust.