AR-15 Lower Parts Kits
When you're piecing together your dream AR-15 build, every component matters, right down to the smallest parts. At A1Armory, our AR-15 Lower Parts Kits are meticulously crafted to provide reliability and precision in every shot. These kits feature top-tier components sourced from trusted manufacturers, ensuring that your AR-15 operates smoothly and consistently. Whether you're a seasoned enthusiast or diving into the world of custom builds for the first time, our comprehensive kits make assembly a breeze. From the trigger assembly to the pivot and takedown pins, each part is engineered for durability and performance, so you can trust your rifle in any scenario. Elevate your AR-15 build with A1Armory's Lower Parts Kits and experience the difference quality makes.
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On Sale
Timber Creek AR-15 Blue Lower Parts Color Kit
Now: $58.99Was: $64.99Timber Creek Outdoors Blue Color Enhanced Parts Kit Timber Creek AR-15 Blue Lower Parts Color Kit – a precision-crafted enhancement for your rifle that combines style with performance. Elevate your AR-15's...Now: $58.99Was: $64.99 -
Guntec AR-15 Anodized Orange Anti-Rotation Trigger/Hammer Pin Set
$29.99Guntec AR-15 Anodized Orange Anti-Rotation Trigger/Hammer Pin Set Title: Guntec AR-15 Anodized Orange Anti-Rotation Trigger/Hammer Pin Set - Enhance Your Firearm's Reliability and Stability Description: Elevate...$29.99 -
On Sale
XTS-58 AR Stock Complete Lower Parts Kit
Now: $87.99Was: $133.99XTS Skeletonized Stock Complete Lower Parts Kit Introducing the XTS Skeletonized Stock Complete Lower Parts Kit, a revolutionary upgrade for your AR platform. Crafted with precision and innovation, this kit boasts a range of features...Now: $87.99Was: $133.99 -
AR15 Anodized Blue Enhanced Lower Parts Kit
$189.99AR15 Anodized Blue Enhanced Lower Parts Kit-FREE SHIPPING The AR15 Anodized Blue Enhanced Lower Parts Kit is a top-tier collection of components, designed to upgrade your AR15 with precision and style...$189.99 -
Timber Creek Outdoors AR-15 Robins Egg Blue Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Robins Egg Blue Lower Parts Kit Add standout style and superior function to your AR-15 with the Timber Creek Outdoors Robin’s Egg Blue Lower Parts Kit. Precision CNC-machined from aircraft-grade...$98.99 -
Timber Creek Outdoors AR-15 OD Green Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 OD Green Lower Parts Kit Complete your AR-15 build with the Timber Creek Outdoors ODG Lower Parts Kit, engineered for performance and built with a tough, military-inspired Olive Drab Green anodized finish...$98.99 -
Timber Creek Outdoors AR-15 Tungsten Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Tungsten Lower Parts Kit Take your AR-15 build to the next level with the Timber Creek Outdoors AR-15 Tungsten Lower Parts Kit. Designed for shooters who value both precision engineering and modern style, this kit features...$98.99 -
Timber Creek Outdoors AR-15 Red Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Red Lower Parts Kit Add a powerful pop of color and tactical performance to your next AR build with the Timber Creek Outdoors AR-15 Red Lower Parts Kit. Designed for shooters who demand quality and...$98.99 -
Timber Creek Outdoors AR-15 Purple Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Purple Lower Parts Kit Make your AR-15 build stand out with the Timber Creek Outdoors AR-15 Purple Lower Parts Kit, engineered for reliability, precision, and vibrant style. Crafted from...$98.99 -
Timber Creek Outdoors AR-15 Orange Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Orange Lower Parts Kit Stand out on the range with the Timber Creek Outdoors AR-15 Orange Lower Parts Kit, designed for shooters who want top-tier performance with a splash of bold style. Crafted from...$98.99 -
Timber Creek Outdoors AR-15 Flat Dark Earth Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Flat Dark Earth (FDE) Lower Parts Kit Build your AR-15 with unmatched precision and tactical flair using the Timber Creek Outdoors Flat Dark Earth (FDE) Lower Parts Kit. Crafted from CNC-machined aircraft-grade...$98.99 -
Timber Creek Outdoors AR-15 Burnt Bronze Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Burnt Bronze Lower Parts Kit Add a bold, tactical edge to your next AR build with the Timber Creek Outdoors Burnt Bronze Anodized Lower Parts Kit. Crafted from aircraft-grade billet aluminum and...$98.99 -
Timber Creek Outdoors AR-15 Blue Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Blue Lower Parts Kit Bring your AR-15 build to life with the Timber Creek Blue Anodized Lower Parts Kit—a perfect blend of precision engineering, bold aesthetics, and rugged durability. Made from aircraft-grade...$98.99 -
AR-15 Mil Spec Buffer Tube Enhanced Lower Parts Kit Combo
$47.99AR-15 Mil Spec Lower Parts Combo Kit Upgrade your AR-15 with this all-in-one combo kit, engineered for durability, performance, and tactical versatility. Ideal for new builds or custom upgrades, this kit includes everything you need...$47.99 -
AR-15 Alpha Stock Ambi Mil Spec Lower Parts Build Kit
$139.99A1Armory AR-15 Lower Build Kit - Alpha- Stock This AR15 Lower Parts Build Kit comes with a complete LPK and a Mil-Spec Alpha Stock Kit. This lower build kit comes with everything that you need to complete your 80 percent lower other than the lower...$139.99 -
On Sale
AR-15 Cobra Stock MK2 Ambi Mil Spec Lower Parts Build Kit
Now: $139.99Was: $159.99A1Armory AR-15 Lower Build Kit - Cobra MK2- Stock This AR15 Lower Parts Build Kit comes with a complete LPK and a Mil-Spec Cobra MK2 Stock Kit. This lower build kit comes with everything that you need to complete your 80 percent lower other than...Now: $139.99Was: $159.99 -
AR-15 Alpha Stock MK2 Ambi Mil Spec Lower Parts Build Kit
$139.99Trinity Force Alpha MK2- Stock AR-15 Lower Build Kit - This AR15 Lower Parts Build Kit comes with a complete LPK and a Mil-Spec Alpha MK2 Stock Kit. This lower build kit comes with everything that you need to complete your 80 percent lower other...$139.99 -
AR-15 Omega Stock Ambi Mil Spec Lower Parts Build Kit
$129.99AR-15 Omega Lower Parts Build Kit-FREE SHIPPING Upgrade or complete your AR-15 build with precision-engineered components you can trust. The Omega Lower Parts Build Kit is crafted with high-quality materials and proudly made in the USA,...$129.99 -
On Sale
AR-15 Lower Parts Build Kit Flat Dark Earth Magpul MOE Stock
Now: $139.99Was: $189.99Flat Dark Earth RTB Lower Parts Build Kit -MAGPUL MOE Minimalist Stock --FREE SHIPPING! This FDE AR Lower Parts Build Kit comes with our True Mil-Spec Trigger Assembly along with a Flat Dark Earth Magpul MOE Stock and is perfect for...Now: $139.99Was: $189.99 -
AR-15 Lower Parts Build Kit Flat Dark Earth Minimalist Stock
$189.99RTB Lower Parts Build Kit - Mission First Minimalist Stock - FLAT DARK EARTH FREE SHIPPING! This Right To Bear FDE AR Lower Parts Build Kit comes with our True Mil-Spec Trigger Assembly along with an Flat Dark...$189.99 -
On Sale
Timber Creek AR-15 Black Lower Parts Color Kit
Now: $58.99Was: $64.99Timber Creek Outdoors Black Color Enhanced Parts Kit Description: Upgrade your AR with the Timber Creek Outdoors Black Color Enhanced Parts Kit, featuring precision-engineered components designed to enhance both functionality and...Now: $58.99Was: $64.99 -
Timber Creek Outdoors AR-15 Black Lower Parts Kit
$98.99Timber Creek Outdoors AR-15 Black Lower Parts Kit Elevate your next AR build with the Timber Creek AR-15 Black Lower Parts Kit, a precision-crafted solution for shooters who demand reliability, durability, and tactical style. Built from aircraft-grade...$98.99 -
AR-15 Mil Spec Lower Build Kit minus Lower Receiver
$109.99A1Armory AR-15 Lower Build Kit with LE- Stock-FREE SHIPPING Complete your AR-15 lower receiver with the A1Armory AR-15 Lower Build Kit, featuring an LE Stock. This kit includes everything you need except the lower receiver itself, available...$109.99 -
A1Armory 31 piece Lower Parts Kit
$49.95A1Armory AR-15 Lower Parts Kit Upgrade your AR-15 build with confidence using the A1Armory AR-15 31-Piece Lower Parts Kit — a complete, precision-machined solution for builders and enthusiasts who demand performance,...$49.95 -
A1Armory AR-15 Fire Control Group FCG
$29.99A1Armory AR-15 Fire Control Group FCG Material Excellence: The A1Armory AR-15 Fire Control Group is crafted with precision using high-quality materials to ensure exceptional durability and performance. The trigger and hammer are...$29.99 -
Presma 31 Piece AR-15 Lower Parts Kit With FCG
$43.99Presma 31 Piece AR-15 Lower Parts Kit With FCG Lower Parts Kit for AR-15. ...$43.99 -
Presma 28 Piece AR-15 Lower Parts Kit .223/5.56
$34.99Presma 28 Piece AR-15 Lower Parts Kit [without FCG] Upgrade your AR-15 build with the Presma 28 Piece Lower Parts Kit, a high-performance component set designed for reliability, customization, and precision. This...$34.99 -
A1Armory Mil-Spec Lower Parts Spring Kit
$4.75A1Armory AR-15 Mil-Spec Lower Parts Spring Kit AR-15 Mil-Spec Lower Parts Spring Kit – meticulously crafted for precision and reliability. Elevate your AR-15 with this comprehensive kit, ensuring optimal performance for every...$4.75 -
On Sale
WLA AR-15 FCG Lower Parts Kit
Now: $44.99Was: $54.99WLA AR-15 FCG Lower Parts Kit Our lower parts kits contain all high quality, 100% USA produced components, manufactured to our exacting standards. Each kit is guaranteed to fit your mil-spec dimension lower receiver. We don't...Now: $44.99Was: $54.99 -
AR15 Pin and Detent Kit
$12.75AR-15 Phosphate Pin and Detent Kit Title: AR-15 Phosphate Pin and Detent Kit - Precision Crafted USA Components for Mil-Spec Lower Receivers Description: Elevate your AR-15 build with our meticulously crafted AR-15...$12.75 -
A1Armory AR15 Lost Parts Kit
$16.95A1Armory AR15 Lost Parts Kit A1Armory AR15 Lost Parts Kit Set - a comprehensive solution designed to keep your AR15 build on track by providing a complete set of high-quality, 100% USA-produced components. Crafted with meticulous attention...$16.95