AR-15 Parts
Welcome to A1Armory.com! The top choice for deals on AR-15 parts, kits, accessories and more. All discounted priced and backed by outstanding customer service. Made in America with warranties!
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AR-15 Mil Spec Receiver End Plates
MSRP: $6.29$3.91AR-15 Mil Spec Receiver End Plates Our end plates are stamped, heat treated, and phosphate coated for long-term corrosion resistance. Features: Mil-Spec Hardened Phosphate Coated Made in...MSRP: $6.29$3.91 -
10 AR10 / AR15 Pivot & Takedown Pin Springs
MSRP: $15.99$8.2710- Pack Pivot & Takedown Pin Springs 10-Pack Pivot & Takedown Pin Springs✅ Precision-Crafted | ✅ 100% USA Made | ✅ Milspec Quality Ensure smooth operation and reliable performance for your...MSRP: $15.99$8.27 -
A1Armory 31 piece Lower Parts Kit
$45.95A1Armory 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,...$45.95 -
OdinWorks 223 Black Nitride Bolt Carrier Group
$119.59Odin Works .223/5.56/.300 Black Nitride Bolt Carrier Group-FREE SHIPPING Features: Mil-Spec dimensions Bolt Carrier Group Material: Case Hardened 8620 Steel Finish: Black Nitride. This advanced low friction coating minimizes the need for...$119.59 -
Odin Works Blue 15.5" 02 Lite M-Lok Handguard
$192.97Odin Works 15.5" 02 Lite M-Lok Handguard-FREE SHIPPING! The O2 Lite Hand guard is the latest and lightest of all the ODIN Works forends. Precision machined from 6005-T651, the O2 lite is a full 20% lighter than its predecessors. All ODIN Works...$192.97 -
Odin Works AR15 .223 Wylde 16.1" Mid Length Stainless Steel Barrel
$303.59Odin Works .223 16.1" Mid Length Barrel-FREE SHIPPING! Description: Elevate your AR15 performance to unparalleled levels with the Odin Works .223 16.1" Mid-Length Barrel. Crafted with precision and...$303.59 -
Odin Works .223 Wylde 18" 3-gun Intermediate Barrel
$320.15Odin Works .223 Wylde 18" 3-gun Intermediate Barrel- FREE SHIPPING! The Odin Works .223 Wylde 18" 3-gun Intermediate Barrel is a high-quality barrel engineered for exceptional accuracy and reliability in...$320.15 -
Odin Works .223 Wylde 16.1" Intermediate Barrel
$321.99Odin Works .223 Wylde 16.1" Intermediate Barrel W Free Adjustable Gas Block-FREE SHIPPING! Experience the ultimate in accuracy and adaptability with the Odin Works .223 Wylde 16.1" Intermediate Barrel. This exceptional barrel is...$321.99 -
AR15 Custom Engraved Reaper Skull Mil-Spec Trigger Guard
$8.27AR-15 Custom Engraved Reaper Skull Milspec Trigger Guard Description: Elevate your AR-15 to new heights with our Custom Engraved Reaper Skull Mil-Spec Trigger Guard, meticulously crafted for firearm enthusiasts who...$8.27 -
AR15 Custom Engraved Distressed Flag Trigger Guard
$8.05AR15 Custom Engraved Distressed Flag Trigger Guard Upgrade your AR-15 with the Custom Engraved Distressed American Flag Trigger Guard, a perfect blend of rugged design, patriotic detail, and mil-spec reliability. Crafted for builders...$8.05 -
AR15 Custom Engraved Don't Tread On Me Mil-Spec Trigger Guard
$8.05AR15 Custom Engraved Don't Tread On Me Mil-Spec Trigger Guard Title: "AR15 Custom Engraved Don't Tread On Me Snake Mil-Spec Trigger Guard - Elevate Your Firearm with Precision Craftsmanship" Description: Upgrade your AR15 with the...$8.05 -
Phase5 Black Dimpled Magazine Release Button
$11.03Phase 5 Black Dimpled Magazine Release Black/ Red/ Grey / Blue The Phase 5™ PMR-Dimpled is a CNC machined 6061-T6 billet aluminum magazine release button. Easy to install, the PMR is a drop in component that...$11.03 -
Phase5 Black Angle Textured Magazine Release
$11.95Phase5 Black Angled Textured Magazine Release Title: Precision Performance Upgrade: Phase5 Black Angled Textured Magazine Release for Enhanced Firearm Control Description: Elevate your firearm's performance with the Phase 5™...$11.95 -
Phase5 AR-15 Chrome Lined Complete Bolt Carrier Group
$137.07Phase5 AR-15 Chrome Lined Complete Bolt Carrier Group-FREE SHIPPING! Phase 5’s Mil-spec AR-15 bolt carrier features a heat treated and chrome lined inner with a black phosphate coating. The complete bolt carrier group includes cam...$137.07 -
Phase5 Black Oversized Magazine Release (OMR)
$22.99Phase 5 Black Oversized Magazine Release (OMR) Title: Precision Performance Upgrade: Phase 5 Black Oversized Magazine Release (OMR) for Enhanced Firearm Control Description: Elevate...$22.99 -
On Sale
Phase5 M16 / M4 Chrome Lined Complete Bolt Carrier Group
Now: $147.19Was: $165.00M16/M4 Chrome Lined Black Phosphate Bolt Carrier Group-FREE SHIPPING! Phase 5’s Mil-spec M-16 / M4 bolt carrier features a heat treated and chrome lined inner with a black phosphate coating. The complete bolt carrier group includes...Now: $147.19Was: $165.00 -
Phase5 Black Extended Bolt Release V1
MSRP: $59.99$45.99Phase 5 Extended Black Bolt Release V1 The Phase 5™ Extended Bolt Release v1 (EBRv1) is a two-piece heat-treated add-on. When mounted to your existing bolt catch, the EBRV1 helps clear jams and double feeds efficiently, and allows...MSRP: $59.99$45.99 -
Phase5 Black Winter Trigger Guard
MSRP: $29.99$27.59Phase 5 Black Winter Trigger Guard Description: Upgrade your firearm's functionality and aesthetics with the newly redesigned Phase 5 Black Winter Trigger Guard (WTG). Crafted from durable Billet Aluminum and finished...MSRP: $29.99$27.59 -
10 Pack AR15 Forward Assist Springs
$5.5110-AR15 / AR10 Lower Parts - Forward Assist Springs Title: "Premium 10-Pack AR15/AR10 Lower Parts - Forward Assist Springs" Product Description: Upgrade your firearm's performance with our premium 10-Pack AR15/AR10 Lower Parts -...$5.51 -
10 Pack AR-15/AR-10 Selector & Ejector Spring Set
$8.6910 Pack-A1Armory AR-15/AR-10/M16 Selector/Ejector Spring Set One of the most common caused for a "failure to eject" is a worn or broken ejector spring. Springs are considered "wear" items and have a limited service life. Make...$8.69 -
AR15/AR10 Gas Key Screw
$1.83AR-15 Gas Key Screw Title: Precision-Engineered AR-15 Gas Key Screw - Enhance Your Firearm's Performance Description: Upgrade your AR-15, M16, or AR-10 with our top-of-the-line Gas Key Screw, meticulously designed for...$1.83 -
10 Pack AR-15 Ejector Roll Pins
$5.97A1Armory AR-15 Ejector Roll Pins 10 Pack AR-15 ejector roll pins play a crucial role in the functioning of the rifle's ejection system. They are small, cylindrical pins that secure the ejector spring and ejector in place within the...$5.97 -
10 Pack AR-15 Mil-Spec Extractor Springs
$8.2710 Pack AR-15 Mil Spec Extractor Springs Mil-Spec Fits any standard AR-15 / M16 bolt Standard power MADE IN USA ...$8.27 -
A1Armory AR-15 Mil Spec Trigger Spring
$1.83A1Armory AR-15 mil-spec Trigger Spring A1Armory AR-15 Mil-Spec Trigger Spring, meticulously crafted to exacting mil-spec dimensions for optimal performance. This standard power trigger spring is designed for use on both AR15 and...$1.83 -
On Sale
Guntec AR-15 Flat Dark Earth Essentials Kit
Now: $228.11Was: $279.95Guntec AR-15 Flat Dark Earth Essentials Kit- FREE SHIPPING Essentials AR-15 Flat Dark Earth Kit Includes: Flat Dark Earth Gen 3 Gate Flat Dark Earth Mil-Spec Buffer Tube Complete Assembly Flat Dark Earth 5.56...Now: $228.11Was: $279.95 -
Guntec AR-15/AR.308 Anodized Black Extended Mag Catch Paddle Release
$18.39Guntec AR-15/AR.308 Black Anodized Extended Mag Catch Paddle Release Ergonomic Contoured Design Fits Any .223/.308 Quick Acquisition Allows For Fast Mag Change Us Made Milspec Lower...$18.39 -
AR15 16" 5.56 Nitride M4 Carbine Length Barrel
MSRP: $88.99$68.99AR15 16" 5.56 Nitride M4 Carbine Length Barrel Looking for a battle-proven barrel that blends durability, performance, and value? This AR-15 16" 5.56 NATO M4 Carbine-Length Barrel is designed to meet the demands of shooters who...MSRP: $88.99$68.99 -
A1Armory AR-15 Fire Control Group FCG
$27.59A1Armory 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...$27.59 -
10 Pack AR-15 Buffer Retaining Pin
$17.4310-AR-15 Nitride Buffer Retaining Pin 10-AR-15 Nitride Buffer Retaining Pins, meticulously engineered to meet and exceed milspec standards. Crafted with precision on state-of-the-art Swiss CNC machines, these buffer retainer pins...$17.43 -
10 Pack AR-15 Bolt Catch Plunger
MSRP: $8.49$7.81AR-15 Nitride Bolt Catch Plunger Upgrade your rifle with the dependable AR-15 Nitride Bolt Catch Plunger, designed for smooth bolt catch operation and long-lasting performance. Whether you're building a new rifle or...MSRP: $8.49$7.81 -
Presma 31 Piece AR-15 Lower Parts Kit With FCG
MSRP: $57.99$40.47Presma 31 Piece AR-15 Lower Parts Kit With FCG Build with confidence using the Presma 31 Piece AR-15 Lower Parts Kit—a comprehensive, high-quality set that includes...MSRP: $57.99$40.47 -
Presma 28 Piece AR-15 Lower Parts Kit .223/5.56
MSRP: $44.99$32.19Presma 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...MSRP: $44.99$32.19 -
Presma Skeletonized Black Pistol Grip
MSRP: $49.99$45.99A1Armory Skeletonized Black Pistol Grip Lightweight. Rugged. American-Made. Upgrade your AR platform with the A1Armory Skeletonized Black Pistol Grip—a sleek, precision-engineered component that blends ultra-lightweight design...MSRP: $49.99$45.99 -
Black Nitride Pistol Length Gas Tube With Roll Pin
MSRP: $15.99$11.95A1Armory AR-15 Black Pistol Length Gas Tube With Roll Pin This is our Mil-Spec Pistol Length Gas tube, made in the U.S.A. Provides optimal heat and corrosion resistance and consistent gas flow. Length: 6.75" Steel...MSRP: $15.99$11.95 -
AR-15 Mil-Spec Lower Parts Spring Kit
$4.59AR-15 Mil-Spec Lower Parts Spring Kit Upgrade your AR-15 platform with this comprehensive Mil-Spec Lower Parts Spring Kit, built to exacting standards for dependable performance in every condition. Whether you're assembling a new build or...$4.59 -
10 Pack AR-15 Lower Receiver Safety Selector Detents
MSRP: $16.99$11.27A1Armory AR-15 Selector Detent 10 Pack Lower Parts A1Armory AR-15 Selector Detent 10 Pack Lower Parts, meticulously crafted to meet and exceed milspec dimensions, ensuring optimal performance and reliability for...MSRP: $16.99$11.27 -
AR-15 Nitride Fire Control Group Pin Set
$2.75AR-15 Fire Control Group Pin/FCG Pin Set Upgrade your AR-15 or M16 lower with our premium AR-15 Fire Control Group (FCG) Pin Set, engineered for superior fit, finish, and function. Whether you're assembling a new build or...$2.75 -
A1armory AR15 Hammer Spring
$1.83AR Platform Hammer Spring Title: A1armory USA-Made MIL-SPEC AR-15/M16 Hammer Spring: Elevate Your Firearm's Performance Features: Precision-crafted in the USA to meet MIL-SPEC standards,...$1.83 -
AR10 / AR15 Disconnector
MSRP: $5.99$4.13AR-15 Disconnector Upgrade your AR-15 or AR-10 platform with the A1Armory AR-15 Disconnector — engineered for precision, durability, and smooth operation. Whether you're building a new rifle or replacing a worn...MSRP: $5.99$4.13 -
A1armory AR15 Takedown/Pivot Pin Detent Set
MSRP: $1.99$1.83AR-15 Pivot Pin & Takedown Pin Detents Perfect for replacing lost parts or preparing for future builds, these AR-15 Pivot Pin & Takedown Pin Detents are a must-have for any serious gunsmith, armorer, or enthusiast...MSRP: $1.99$1.83
AR-15 Parts – Build, Customize & Maintain Your Rifle
At A1Armory.com, we carry a full selection of high-quality AR-15 parts designed for shooters who demand reliability, performance, and customization options. Whether you’re building your first AR from the ground up, upgrading components for improved handling, or replacing worn parts, we provide everything you need in one place.
Why Choose Our AR-15 Parts?
✅ Wide Selection – From barrels, triggers, handguards, and stocks to small pins, springs, and buffer assemblies, we stock all the essential AR-15 components.
✅ Premium Materials – Every part is crafted from durable materials like 4150 Chrome Moly Vanadium steel, 7075-T6 aluminum, and stainless steel to ensure strength and long service life.
✅ Cerakote & Anodized Colors – Personalize your rifle with a variety of Cerakote finishes and anodized colors including Flat Dark Earth (FDE), Burnt Bronze, Zombie Green, and more.
✅ Made in the USA Options – We proudly carry parts manufactured in the United States, built to meet strict Mil-Spec standards.
✅ Affordable & Trusted – Competitive pricing backed by our small, family-owned business ethos means you get dependable parts with unmatched service.
Build It Your Way
Whether you want a precision long-range rifle, a lightweight competition build, or a tactical carbine, our parts catalog gives you the freedom to customize your AR-15 exactly how you want it. From complete upper and lower assemblies to individual components, we ensure compatibility, performance, and trusted quality in every piece we sell.