AR-15 Lower Parts

AR-15 Lower Parts

At A1Armory.com, our selection of AR-15 Lower Parts encompasses an extensive range of components meticulously crafted to elevate your firearm's performance and durability. Designed with precision engineering and manufactured to exacting standards, our lower parts are the cornerstone of any AR-15 build, ensuring reliability and optimal functionality. From trigger assemblies to buffer tubes, each part is carefully selected to guarantee compatibility and seamless integration, whether you're assembling a new rifle or upgrading an existing platform.

  • AR-15 Commercial Spec 6 Position Buffer Tube

    AR-15 6 Position Buffer Tube Comm Spec

    $15.29
    AR-15 Commercial Spec 6 Position Buffer Tube       AR-15 Commercial Spec 6 Position Buffer Tube, a precision-engineered component designed to enhance the performance and versatility of your AR-15 rifle. Crafted from...
    $15.29
  • AR-15 nitride coated steel ejector to help clear spent brass out of the chamber

    AR-15 Ejector

    $3.59
    AR-15 Ejector     Ensure smooth and reliable ejection of spent brass with our high-quality AR-15 ejector. Crafted for durability and precision, this essential component is designed to keep your firearm functioning flawlessly. Compatibility:...
    $3.59
  • Carbine Buffer Spring for AR-15

    AR15 Carbine Buffer Spring

    $4.37
    AR-15 Carbine Buffer Spring        AR15 Carbine Buffer Spring – your go-to solution for maintaining peak performance in your AR15 buffer system. Here's why this buffer spring stands out: Universal Compatibility: Designed to...
    $4.37
  • AR-15 Forward Assist Roll Pin for ar15 lower receivers

    10 Pack AR-15 Forward Assist Roll Pins

    MSRP: $6.99
    $3.59
    10 Pack AR-15 Forward Assist Roll Pins     Ensure your AR-15 functions flawlessly with our 10 Pack Forward Assist Roll Pins. These pins are essential for maintaining the proper operation of your forward assist, which aids in chambering rounds...
    MSRP: $6.99
    $3.59
  • AR15 Trigger Guard Roll Pin FOR TRIGGER GUARD INSTALL-a1armory.com

    10 Pack AR15 Trigger Guard Roll Pins

    $4.73
    10 Pack AR15 Trigger Guard Roll Pins     Product Description: 10 Pack AR15 Trigger Guard Roll Pins Phosphate Coated: Each roll pin features a durable phosphate coating, providing superior corrosion resistance and long-lasting performance...
    $4.73
  • ar 15 gas rings 3 pack for bolt carrier group leaks

    AR15 Gas Ring 3 Pack

    $2.69
    AR15 Gas Ring 3 Pack       Ensure your AR15 or M16 runs at peak performance with our high-quality gas rings. Gas leaks can significantly impact your firearm's reliability, making gas rings a crucial component to maintain. Keep a few of...
    $2.69
  • AR15 LOWER RECEIVER BLACK ACCU WEDGE

    AR15 Accu Wedge Red or Black

    $1.80
    Accu-wedge                                 MINIMUM ORDER QUANITY OF 3 Tighten Up Your AR – Enhance Accuracy & Reliability Eliminate the play between your upper...
    $1.80
  • AR15 black MIL SPEC steel hammer for fire control group A1Armory.com

    AR-15 Standard Mil-Spec Steel Hammer

    MSRP: $18.99
    $12.59
    AR-15 Mil Spec Hammer       AR-15 Mil-Spec Hammer – crafted with precision in the USA from durable 8620 alloy steel. This essential component ensures optimal performance in your AR15 rifle build, serving as a reliable...
    MSRP: $18.99
    $12.59
  • AR-15 American Flag Engraved Trigger Guard

    American Flag Engraved Trigger Guard

    $13.49
    AR-15 American Flag Engraved Trigger Guard       Upgrade your AR-15 with a high-quality trigger guard that blends rugged construction with patriotic style. The American Flag Engraved Trigger Guard offers both functionality and bold...
    $13.49
  • Mil-Spec carbine stock lock ring, also known as the 'Castle Nut'.

    AR-15 Mil Spec Castle Nut

    MSRP: $5.99
    $3.14
    AR-15  Steel Castle Nut       Secure your build with unmatched strength and reliability. The AR15 / M16 / AR10 Steel Castle Nut is engineered to provide rock-solid performance in even the most demanding shooting conditions...
    MSRP: $5.99
    $3.14
  • Presma Lightweight Aluminum Angle Curved Foregrip

    Presma Lightweight Aluminum Angle Curved Foregrip

    $25.88
    Presma Lightweight Aluminum Angle Curved Foregrip     Introducing the Presma Lightweight Aluminum Angle Curved Foregrip, the perfect accessory to enhance your rifle's performance and comfort. Crafted with precision and designed for optimal...
    $25.88
  • Trinity Force Omega Mil-Spec Adjustable Stock w QR Sling Adapter

    Omega Mil-Spec Adjustable Stock w/ QR Sling Adapter

    $22.49
    Trinity Force Omega Mil-Spec Adjustable Stock w/ QR Sling Adapter         Upgrade your AR-15 or M4 platform with the Trinity Force Omega Mil-Spec Adjustable Stock, a battle-ready enhancement engineered for...
    $22.49
  • AR-15 6 Position mil spec Aluminum Buffer Tube Kit.

    AR-15 6 Position Aluminum Buffer Tube Kit, Mil Spec

    MSRP: $34.99
    $22.49
    AR-15 6 Position Aluminum Mil Spec Buffer Tube Kit       AR-15 6 Position Aluminum Buffer Tube Kit by a1armory, a premium accessory ensemble designed for enhanced firearm performance. Elevate your shooting experience with this...
    MSRP: $34.99
    $22.49
  • AR-15 We The People Are Pissed Engraved Trigger Guard

    AR-15 We The People Are Pissed Engraved Trigger Guard

    MSRP: $18.99
    $8.99
    AR-15 We The People Are Pissed Engraved Trigger Guard         Premium Construction: Made from durable 6061 aluminum, ensuring rugged reliability and long-lasting performance. Patriotic Engraving: Proudly displays the phrase "We...
    MSRP: $18.99
    $8.99
  • AR-15 One Shot One Kill Engraved Trigger Guard

    AR-15 One Shot One Kill Engraved Trigger Guard

    $11.69
    AR-15 One Shot One Kill Engraved Trigger Guard       Introducing the AR-15 One Shot One Kill Engraved Trigger Guard, meticulously crafted to elevate your firearm experience. Precision-engineered from high-grade 6061 aluminum, this trigger...
    $11.69
  • Ar15 custom engraved trigger guard master blaster

    AR-15 Master Blaster Custom Engraved Trigger Guard

    $11.69
    AR-15 Master Blaster Engraved Trigger Guard     Introducing the AR15 Master Blaster Engraved Trigger Guard, meticulously crafted to elevate your firearm experience. Built with precision and pride in the USA, this trigger guard boasts...
    $11.69
  • AR15 Finger Me Engraved Trigger Guard

    AR-15 Finger Me Engraved Trigger Guard

    $13.49
    AR-15 "Finger Me" Laser Engraved Trigger Guard     Give your rifle a bold, custom look with the AR-15 "Finger Me" Engraved Trigger Guard — a perfect combination of attitude and performance. Whether you're building a custom AR or upgrading...
    $13.49
  • AR15 Betsy Ross Flag Engraved Mag Catch Kit.

    AR15 Betsy Ross Flag Engraved Mag Catch Kit

    $13.49
    AR15 Betsy Ross Flag Engraved Mag Catch Kit       Honor American heritage and upgrade your AR-15 with the AR-15 Betsy Ross Flag Engraved Magazine Catch Kit – a premium component designed for reliability, style, and performance...
    $13.49
  • AR-15 Enemy Forward Engraved Custom Trigger Guard

    AR-15 Enemy Forward Engraved Custom Trigger Guard

    $11.69
    AR-15 Enemy Engraved Trigger Guard       Introducing the AR15 Enemy Engraved Trigger Guard, meticulously crafted to enhance your firearm experience with unparalleled durability and style. Here's why it stands out: Premium Construction:...
    $11.69
  • AR15 Death Before Dishonor Engraved Trigger Guard

    AR15 Death Before Dishonor Engraved Trigger Guard

    $13.49
    AR15 Death Before Dishonor Engraved Trigger Guard     Introducing the AR15 Death Before Dishonor Engraved Trigger Guard, meticulously crafted for the discerning firearm enthusiast. This trigger guard stands as a testament to both style and...
    $13.49
  • On Sale
    AR15 Custom Bone Collector Engraved Trigger Guard

    AR15 Bone Collector Engraved Trigger Guard

    Now: $13.49
    Was: $19.99
    AR15 Bone Collector Engraved Trigger Guard   6061 ALUMINUM Comes with Hardware Manufactured and Engraved In USA                                      ...
    Now: $13.49
    Was: $19.99
  • AR15 Bad MotherF'er Engraved Trigger Guard

    AR15 Bad MotherF'er Engraved Trigger Guard

    $8.89
    AR15 Bad MotherF'er Engraved Trigger Guard       Elevate your AR-15 build with the Bad MotherF'er Engraved Trigger Guard, crafted from high-quality 6061 aluminum. This custom trigger guard not only enhances the functionality of your rifle...
    $8.89
  • AR-15 Bad Ass Engraved Trigger Guard

    AR-15 Bad Ass Engraved Trigger Guard

    $8.99
    AR-15 Bad Ass Engraved Trigger Guard       Show your patriotism and dedication to freedom with the “Don’t Tread On Me” Engraved AR-15 Trigger Guard. Crafted from high-quality 6061 aluminum, this trigger guard is not only...
    $8.99
  • AR-15 Black LE Mil-Spec Adjustable Stock w Sling Adapter

    AR-15 Mil-Spec Adjustable LE Stock w/ Sling Adapter & Recoil Pad

    $17.09
    AR-15 Black LE Mil-Spec Adjustable Stock w/ Sling Adapter       Upgrade your AR-15 platform with the Black LE Mil-Spec Adjustable Stock – engineered for law enforcement-grade performance and built to withstand the...
    $17.09
  • AR-15 Mil Spec Ambi Lower Build Kit minus Lower Receiver-A1Armory.

    AR-15 Mil Spec Lower Build Kit minus Lower Receiver

    MSRP: $139.99
    $89.09
    A1Armory 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...
    MSRP: $139.99
    $89.09
  • A1A AR-15 Ambi dual sling mount receiver End Plate-A1Armory.com

    AR-15 Ambidextrous Dual Sling Mount End Plate

    MSRP: $8.99
    $4.49
    AR-15 Ambidextrous Receiver Dual Sling Mount End Plate         Upgrade your rifle’s versatility and reliability with the AR-15 Ambidextrous Receiver Dual Sling Mount End Plate. Engineered for rugged durability and...
    MSRP: $8.99
    $4.49
  • AR-15 Receiver Extension End Plates

    AR-15 Mil Spec Receiver End Plates

    MSRP: $7.99
    $3.14
    AR-15 Mil Spec Receiver End Plates                                                              ...
    MSRP: $7.99
    $3.14
  • A1A AR-15 Receiver Extension End Plate

    Bulk Wholesale AR-15 Mil-Spec End Plates

    $2.39
    Bulk Wholesale AR Platform Buffer Tube Receiver End Plates       MINIMUM OF 100 MUST BE PURCHASED Description: Upgrade your AR15, M16, or AR10 with our Mil-Spec AR .223/5.56/.308 Buffer Tube Receiver End Plate, designed to...
    $2.39
  • 10 AR10  AR15 Pivot & Takedown Pin Springs in bulk

    10 AR10 / AR15 Pivot & Takedown Pin Springs

    MSRP: $15.99
    $8.09
    10- 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
    $8.09
  • Odin Works Black XMR 3 Extended Magazine Release Button

    Odin Works Black XMR 3 Extended Magazine Release Button

    $18.89
    OdinWorks Black XMR 3 Extended Magazine Release Button       Title: Elevate Your Firearm Performance with Odin Works Black XMR 3 Extended Magazine Release Button Description: Enhance the functionality and aesthetics of your AR15 or AR10...
    $18.89
  • A1Armory AR-15 31 piece complete lower parts kit with fire control group.

    A1Armory 31 piece Lower Parts Kit

    $44.96
    A1Armory 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,...
    $44.96
  • SKULL - MILSPEC AR-15 TRIGGER GUARD

    AR15 Custom Engraved Reaper Skull Mil-Spec Trigger Guard

    $8.09
    AR-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...
    $8.09
  • AR15 Custom Engraved Distressed Flag Trigger Guard

    AR15 Custom Engraved Distressed Flag Trigger Guard

    $7.88
    AR15 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...
    $7.88
  • DON'T TREAD ON ME - MILSPEC AR-15 TRIGGER GUARD

    AR15 Custom Engraved Don't Tread On Me Mil-Spec Trigger Guard

    $7.88
    AR15 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...
    $7.88
  • ar15 black PHASE 5 black DIMPLED MAGAZINE RELEASE button

    Phase5 Black Dimpled Magazine Release Button

    $10.79
    Phase 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...
    $10.79
  • Phase5 black Angled Textured Magazine Release

    Phase5 Black Angle Textured Magazine Release

    $11.69
    Phase5 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™...
    $11.69
  • Phase5 Black Oversized Magazine Release (OMR)

    Phase5 Black Oversized Magazine Release (OMR)

    $22.49
    Phase 5 Black Oversized Magazine Release (OMR)           Title: Precision Performance Upgrade: Phase 5 Black Oversized Magazine Release (OMR) for Enhanced Firearm Control Description: Elevate...
    $22.49
  • PHASE5 EXTENDED BOLT RELEASE LOWER PART V1-WWW.A1ARMORY.COM

    Phase5 Black Extended Bolt Release V1

    MSRP: $59.99
    $44.99
    Phase 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
    $44.99
  • ar15 BLACK Phase5 Winter Trigger Guard

    Phase5 Black Winter Trigger Guard

    MSRP: $29.99
    $26.99
    Phase 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
    $26.99
  • BLACK Phase5 Extended Bolt Release V3-www.a1armory.com

    Phase5 Black Extended Bolt Catch Release Bad Lever V3

    MSRP: $64.99
    $58.49
    Phase5 Black Extended Bolt Release Bad Lever V3     The Phase 5™ EBRv3 RED and BLUE finish are CERAKOTE. Does not match anodized red/blue components.  The Extended Bolt Release Version 3 was designed to be compatible with all mil...
    MSRP: $64.99
    $58.49