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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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
$539.96Guntec 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...$539.96 -
Guntec AR-15 Clear Anodized Ultimate Pistol Kit
$539.96Guntec 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...$539.96 -
Guntec AR-15 Green Anodized Ultimate Pistol Kit
$539.96Guntec 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...$539.96 -
Guntec AR-15 Gold Anodized Ultimate Pistol Kit
$539.96Guntec 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...$539.96 -
Guntec AR-15 Blue Anodized Ultimate Pistol Kit
$539.96Guntec 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...$539.96 -
Guntec AR-15 Red Anodized Ultimate Pistol Kit
$539.96Guntec 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...$539.96 -
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 -
On Sale
Guntec AR-15 Purple Anodized Ultimate Rifle Kit
Now: $562.49Was: $699.00Guntec AR-15 Purple Anodized Ultimate Rifle Kit- FREE SHIPPING! Guntec AR-15 Purple Anodized Ultimate Rifle Kit, a comprehensive and stylish package designed to enhance the performance and aesthetics of your AR-15. Crafted with...Now: $562.49Was: $699.00 -
On Sale
Guntec AR-15 Green Anodized Ultimate Rifle Kit
Now: $562.49Was: $699.00Guntec 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...Now: $562.49Was: $699.00 -
On Sale
Guntec AR-15 FDE Ultimate Rifle Kit
Now: $580.49Was: $719.00Guntec 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...Now: $580.49Was: $719.00 -
Guntec AR-15 Grey Anodized Ultimate Rifle Kit
MSRP: $699.99$562.49Guntec AR-15 Grey Anodized Ultimate Rifle Kit-FREE SHIPPING! Guntec AR-15 Grey Anodized Ultimate Rifle Kit, a comprehensive package that combines premium...MSRP: $699.99$562.49 -
AR-15 16" .223 Wylde Stainless Straight Fluted Side Charging Upper
$296.09AR-15 16" .223 Wylde Stainless Straight Fluted Side Charging Upper- FREE SHIPPING! Upgrade your AR-15 platform with precision, performance, and convenience. The AR-15 16" .223 Wylde Stainless Steel Side Charging Upper is engineered for...$296.09 -
16" .300 Blackout Stainless Black Nitride Bear Claw Complete Upper
$287.9916" .300 Blackout Stainless Black Nitride Bear Claw Fluted Upper-FREE SHIPPING FREE SHIPPING Unleash precision, power, and rugged performance with this 16" .300 Blackout Complete Upper Assembly. Designed for versatility...$287.99 -
AR-15 16" .223 Wylde Carbine Side Charging Upper Assembly
$260.09AR-15 16" .223 Wylde Carbine Side Charging Complete Upper Assembly- FREE SHIPPING ✅ FREE SHIPPING-BCG & HANDLE INCLUDED Upgrade your rifle with the precision and reliability of our 16" .223 Wylde...$260.09 -
AR-15 5.56 NATO 16" Stainless M4 Carbine Side Charging Upper
$278.99AR-15 5.56 NATO 16" Stainless Carbine Side Charging Complete Upper- FREE SHIPPING ✅ FREE SHIPPING Upgrade your AR build with this precision-engineered 16" Stainless Steel Side Charging Complete Upper. Designed for shooters who...$278.99 -
On Sale
Guntec AR15 5.56 Black Complete Ultralight Series Pistol Kit
Now: $584.99Was: $799.00Guntec AR-15 5.56 Complete Ultralight Series Pistol Kit- FREE SHIPPING! All US...Now: $584.99Was: $799.00 -
On Sale
Guntec AR15 5.56 Red Complete Ultralight Series Pistol Kit
Now: $620.99Was: $849.00Guntec AR-15 5.56 Complete Ultralight Series Pistol Kit- No Lower- Anodized Red- FREE SHIPPING! All US Made Kit Does Not Come Assembled 5.56 Complete BCG Forward Assist Asssembly Ultralight Series...Now: $620.99Was: $849.00 -
On Sale
Guntec AR15 5.56 FDE Complete Rifle Kit #4
Now: $737.99Was: $929.00Guntec AR-15 5.56 Complete Rifle Kit #4- No Lower- Flat Dark Earth- FREE SHIPPING! All US Made Complete Rifle Kit Contains: 5.56 Ejection Door...Now: $737.99Was: $929.00 -
On Sale
Guntec AR-15 5.56 Complete Rifle Kit #5
Now: $701.99Was: $849.00Guntec AR-15 5.56 Complete Rifle Kit #5- No Lower- FREE SHIPPING! All US Made Complete Rifle Kit Contains: 5.56 Ejection Door Assembly 5.56 Complete Lower Parts Kit AR-15 MLS Gen 2 Stock Assembly...Now: $701.99Was: $849.00
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.