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 6 Position Mil-Spec Buffer Tube AR-15 6 Position Mil-Spec Buffer Tube

    AR-15 6 Position Mil-Spec Buffer Tube

    $12.28
    WLA AR-15 6 Position Mil-Spec Buffer Tube       AR-15 6 Position Mil-Spec Buffer Tube, a precision-engineered component designed to enhance the performance and versatility of your AR-15 rifle. Packed with features...
    $12.28
  • AR-15 Commercial Spec 6 Position Buffer Tube AR-15 Commercial Spec 6 Position Buffer Tube

    AR-15 6 Position Buffer Tube Comm Spec

    $15.46
    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...
    $15.46
  • AR-15 nitride coated steel ejector to help clear spent brass out of the chamber AR-15 nitride coated steel ejector to help clear spent brass out of the chamber

    AR-15 Ejector

    $3.63
    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:...
    $3.63
  • Carbine Buffer Spring for AR-15

    AR15 Carbine Buffer Spring

    $4.41
    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...
    $4.41
  • AR15 Trigger Guard Roll Pin FOR TRIGGER GUARD INSTALL-a1armory.com

    10 Pack AR15 Trigger Guard Roll Pins

    $4.78
    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...
    $4.78
  • ar 15 gas rings 3 pack for bolt carrier group leaks

    AR15 Gas Ring 3 Pack

    $2.72
    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...
    $2.72
  • AR15 LOWER RECEIVER BLACK ACCU WEDGE AR15 LOWER RECEIVER BLACK ACCUWEDGE

    AR15 Accu Wedge Red or Black

    $1.36
    Accu-wedge                                 Features: Enhanced Connection: Tighten up the fit between your lower receivers with the Accu Wedge, designed to snugly...
    $1.36
  • AR15 black MIL SPEC steel hammer for fire control group A1Armory.com AR15 black MIL SPEC steel hammer for fire control group A1Armory.com

    AR-15 Standard Mil-Spec Steel Hammer

    $11.82
    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...
    $11.82
  • American Flag Engraved Trigger Guard American Flag Engraved Trigger Guard-a1armory.com

    American Flag Engraved Trigger Guard

    $11.37
    AR-15 American Flag Engraved Trigger Guard       Introducing the AR-15 American Flag Engraved Trigger Guard, a premium accessory designed to enhance your rifle's aesthetic and performance. Crafted with precision from 6061 aluminum, this...
    $11.37
  • Mil-Spec carbine stock lock ring, also known as the 'Castle Nut'. Mil-Spec carbine stock lock ring, also known as the 'Castle Nut'.

    AR-15 Mil Spec Castle Nut

    $3.18
    AR15 / M16 / AR10 Steel Castle Nut       A1Armory AR15/M16/AR10 Steel Castle Nut – the epitome of durability, precision, and reliability for your firearm assembly needs. Elevate your shooting experience with this...
    $3.18
  • On Sale
    AR-15 6 Position mil spec Aluminum Buffer Tube Kit. AR-15 6 Position mil spec Aluminum Buffer Tube Kit.

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

    Now: $26.38
    Was: $34.99
    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...
    Now: $26.38
    Was: $34.99
  • AR-15 One Shot One Kill Engraved Trigger Guard AR-15 One Shot One Kill Engraved Trigger Guard

    AR-15 One Shot One Kill Engraved Trigger Guard

    $11.82
    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...
    $11.82
  • AR15 Betsy Ross Flag Engraved Mag Catch Kit.

    AR15 Betsy Ross Flag Engraved Mag Catch Kit

    $13.64
    AR15 Betsy Ross Flag Engraved Mag Catch Kit       Introducing our AR15 Betsy Ross Flag Engraved Mag Catch Kit, meticulously crafted to add a touch of patriotic flair to your firearm. Made in the USA with precision engineering, this kit...
    $13.64
  • AR-15 Enemy Forward Engraved Custom Trigger Guard

    AR-15 Enemy Forward Engraved Custom Trigger Guard

    $11.82
    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:...
    $11.82
  • AR15 Death Before Dishonor Engraved Trigger Guard

    AR15 Death Before Dishonor Engraved Trigger Guard

    $13.64
    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...
    $13.64
  • AR15 Bad MotherF'er Engraved Trigger Guard

    AR15 Bad MotherF'er Engraved Trigger Guard

    $8.99
    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...
    $8.99
  • AR-15 Bad Ass Engraved Trigger Guard AR15 CUSTOM Bad Ass Engraved Trigger Guard

    AR-15 Bad Ass Engraved Trigger Guard

    $9.09
    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...
    $9.09
  • On Sale
    AR-15 Mil Spec Ambi Lower Build Kit minus Lower Receiver-A1Armory. AR-15 Mil Spec Lower Build Kit minus Lower Receiver-A1Armory.

    AR-15 Mil Spec Lower Build Kit minus Lower Receiver

    Now: $80.07
    Was: $119.99
    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...
    Now: $80.07
    Was: $119.99
  • A1A AR-15 Ambi dual sling mount receiver End Plate-A1Armory.com A1A AR-15 Ambi dual sling mount receiver End Plate-A1Armory.com

    AR-15 Ambidextrous Dual Sling Mount End Plate

    $3.63
    A1Armory AR15 Ambidextrous Receiver Dual Sling Mount End Plate     A1Armory AR15 Ambidextrous Receiver Dual Sling Mount End Plate - Mil Spec, the pinnacle of versatility and reliability for your AR15/M16/AR10 platform. Crafted with...
    $3.63
  • A1A AR-15 Receiver Extension End Plate A1A AR-15 Receiver Extension End Plate

    Bulk Wholesale AR-15 Mil-Spec End Plates

    $3.53
    Bulk Wholesale AR Platform Buffer Tube Receiver End Plates         Description: Upgrade your AR15, M16, or AR10 with our Mil-Spec AR .223/5.56/.308 Buffer Tube Receiver End Plate, designed to provide unparalleled...
    $3.53
  • 10 AR10  AR15 Pivot & Takedown Pin Springs in bulk

    10 AR10 / AR15 Pivot & Takedown Pin Springs

    $8.18
    10 Pack Pivot & Takedown Pin Springs       10 Pack Pivot & Takedown Pin Springs – the essential components for firearm enthusiasts seeking reliability and precision. Crafted to milspec dimensions, these springs...
    $8.18
  • A1Armory AR-15 31 piece complete lower parts kit with fire control group.

    A1Armory 31 piece Lower Parts Kit

    $35.44
    A1Armory AR-15 Lower Parts Kit       Product Description: Upgrade your AR-15 with the A1Armory AR-15 Lower Parts Kit, a comprehensive set of precision-engineered components designed to enhance the performance and reliability of your...
    $35.44
  • ar15 black PHASE 5 black DIMPLED MAGAZINE RELEASE button ar15 black PHASE 5 black DIMPLED MAGAZINE RELEASE button

    Phase5 Black Dimpled Magazine Release Button

    $10.91
    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...
    $10.91
  • Phase5 black Angled Textured Magazine Release Phase5 black Angled Textured Magazine Release

    Phase5 Black Angle Textured Magazine Release

    $11.82
    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™...
    $11.82
  • PHASE5 EXTENDED BOLT RELEASE LOWER PART V1-WWW.A1ARMORY.COM BLACK PHASE5 EXTENDED BOLT RELEASE V1

    Phase5 Black Extended Bolt Release V1

    $36.39
    Phase 5 Extended Black Bolt Release V1 (ebrv1)     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...
    $36.39
  • ar15 BLACK Phase5 Winter Trigger Guard ar15 BLACK Phase5 Winter Trigger Guard

    Phase5 Black Winter Trigger Guard

    $21.83
    Phase 5 Black Winter Trigger Guard         Title: Enhance Your Firearm Control with the Phase 5 Black Winter Trigger Guard Release Button Description: Upgrade your firearm's functionality and aesthetics with the newly...
    $21.83