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 Brown Steel Ambidextrous Safety Selector Switch

    AR-15 Brown Steel Ambidextrous Safety Selector Switch

    MSRP: $24.99
    $16.19
    AR-15 Brown/Bronze Steel Ambidextrous Safety Selector Switch       A1Armory AR-15 Brown Steel Ambidextrous Safety Selector Switch, a precision-engineered upgrade designed to enhance the performance and versatility of your standard 223/5...
    MSRP: $24.99
    $16.19
  • Presma Silver Enhanced Castle Nut

    Presma Silver Enhanced Castle Nut

    MSRP: $19.99
    $13.49
    AR-15 Presma Silver Enhanced Castle Nut       Add a bold, refined finish to your AR-15 with the Presma Enhanced Silver Anodized Castle Nut. Expertly engineered from 7075-T6 aluminum, this premium castle nut combines uncompromising...
    MSRP: $19.99
    $13.49
  • Presma Aluminum Enhanced Red Castle Nut

    Presma Red Aluminum Enhanced Castle Nut

    MSRP: $18.99
    $13.49
    Presma Aluminum Enhanced Red Castle Nut       Add a bold, refined finish to your AR-15 with the Presma Enhanced Red Anodized Castle Nut. Expertly engineered from 7075-T6 aluminum, this premium castle nut combines uncompromising durability...
    MSRP: $18.99
    $13.49
  • Presma Aluminum Enhanced Blue Castle Nut

    Presma Blue Aluminum Enhanced Castle Nut

    MSRP: $18.99
    $13.49
    AR-15 Presma Aluminum Enhanced Blue Castle Nut       Add a bold, refined finish to your AR-15 with the Presma Enhanced Blue Anodized Castle Nut. Expertly engineered from 7075-T6 aluminum, this premium castle nut combines uncompromising...
    MSRP: $18.99
    $13.49
  • AR-15 Black Dual Steel Ambidextrous Safety Selector Switch

    AR-15 Black Dual Steel Ambidextrous Safety Selector Switch

    MSRP: $24.99
    $17.09
    AR-15 Black Steel Ambidextrous Safety Selector Switch     Enhance your AR-15 with the Black Steel Ambidextrous Safety Selector Switch—a high-performance upgrade crafted for tactical versatility, ambidextrous control, and reliable Mil-Spec...
    MSRP: $24.99
    $17.09
  • GUNTEC AR15 ERGONOMIC CHARGING HANDLE LATCH-ANODIZED BLUE-WWW.A1ARMORY.COM

    Guntec AR15 Blue Gen5 Ergonomic Charging Handle Latch

    $22.46
    Guntec AR15 Anodized Blue Charging Handle Latch Gen5        Introducing the Guntec AR15 Charging Handle Latch Blue Gen5, a sleek and efficient addition to your AR-15 setup. Crafted with precision and designed for ease of use,...
    $22.46
  • TF Tactical AR-15 Reduced Trigger 4.5-5.5 lbs Pull Kit

    TF Tactical AR-15 Reduced Trigger Pull Kit

    $8.99
    TF Tactical AR-15 Reduced Trigger Pull Kit      Introducing the TF Tactical AR-15 Reduced Trigger Pull Kit, engineered to elevate your shooting experience with unparalleled precision and ease. Designed to reduce your AR-15 trigger...
    $8.99
  • AR15 BLACK MIL SPEC COMPLETE TRIGGER GROUP FROM WWW.A1ARMORY.COM, TRIGGER ASSEMBLY

    AR15 Mil Spec Trigger Group

    MSRP: $29.99
    $26.99
    AR-15 Mil Spec Trigger group       Upgrade your AR build with this AR-15 Mil-Spec Trigger Group, engineered for durability, precision, and unmatched reliability. Whether you’re completing a new build or replacing worn components,...
    MSRP: $29.99
    $26.99
  • A1Armory AR-15 3oz Standard Carbine Gold Recoil Buffer

    AR-15 Carbine 3oz Recoil Buffer

    $12.59
    A1Armory AR-15 3oz Standard Carbine Recoil Buffer       Introducing the A1Armory AR-15 3oz Standard Carbine Recoil Buffer, designed to optimize your shooting experience with its precision engineering and reliable performance. Here’s...
    $12.59
  • AR15M16 Pistol Buffer Tube Foam Cover

    AR15/M16 Pistol Buffer Tube Foam Cover

    $3.83
    AR-15 Pistol Tube 3.5" Foam Pad Cover     AR-15 Pistol Tube 3.5" Foam Pad Cover – the ultimate solution for enhancing the comfort and performance of your AR15 pistol buffer tube. Crafted with precision and quality in mind,...
    $3.83
  • A1Armory Black Skeletonized AR Pistol Brace

    Presma Black Skeletonized Lightweight Pistol Arm Brace

    $58.46
    Presma Skeletonized Black Anodized Aluminum Pistol Arm Brace       Upgrade your AR pistol setup with the Presma Skeletonized Black Anodized Aluminum Pistol Arm Brace, designed for those who demand a lightweight, sleek, and functional brace...
    $58.46
  • On Sale
    AR-15 6 Position Mil-Spec Buffer Tube

    AR-15 6 Position Mil-Spec Buffer Tube

    Now: $11.69
    Was: $17.99
    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 that...
    Now: $11.69
    Was: $17.99
  • 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

    $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...
    $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