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.

  • AR15 Mil Spec Extractor O-Ring

    AR15 Extractor O-Ring

    $0.80
    AR15 Mil Spec Extractor O-Ring   Fits All Standard AR15 Sized Bolts Fits Over Extractor Spring to Increase Reliability Manufactured to Mil-Spec Dimensions 100% American Made                    ...
    $0.80
  • Saltwater Arms AR15 Stainless Steel Pin and Detent Kit-A1Armory

    Saltwater Arms AR15 Stainless Steel Pin and Detent Kit

    MSRP: $29.99
    $26.99
    Saltwater Arms AR15 Stainless Steel Pin and Detent Kit       Upgrade your AR-15 with the Saltwater Arms Stainless Steel Pin and Detent Kit, engineered for durability, corrosion resistance, and smooth operation. Whether you're building a...
    MSRP: $29.99
    $26.99
  • Presma Skeletonized Gold Anodized Buttstock

    Presma Gold Skeletonized Buttstock

    $107.09
    Presma Skeletonized Gold Anodized Buttstock        Upgrade your rifle with style and strength using the Presma Skeletonized Mil-Spec Buttstock in a bold gold anodized finish. Engineered for high-performance shooting, this...
    $107.09
  • Odin Works Red XMR 3 Extended Magazine Release

    Odin Works Red XMR 3 Extended Magazine Release Button

    $18.89
    Odin Works Red XMR 3 Extended Magazine Release       Title: Odin Works Red XMR 3 Extended Magazine Release for AR-15: Enhanced Ergonomics and Quick Reloads Description: Upgrade your AR-15 with the Odin Works Red XMR 3 Extended...
    $18.89
  • Odin Works Silver XMR 3 Extended Magazine Release Button

    Odin Works Silver XMR 3 Extended Magazine Release Button

    $18.89
    Odin Works Silver XMR 3 Extended Magazine Release Button         Title: Odin Works Silver XMR 3 Extended Magazine Release - Enhanced AR15 Firearm Control Description: Upgrade your AR15's functionality with the Odin...
    $18.89
  • trinity force siege grip

    TF AR15 Aluminum Lightweight Skeletonized Hand Siege Grip

    MSRP: $34.99
    $24.26
    Trinity Force AR15 Aluminum Lightweight Skeletonized Hand Siege Grip       Elevate your rifle’s performance and style with the Trinity Force AR-15 Aluminum Lightweight Skeletonized Hand Siege Grip. Designed for modern shooters,...
    MSRP: $34.99
    $24.26
  • AR15 Collapsible Stock Rubber Buttpad

    AR15 Collapsible Stock Recoil Rubber Pad

    $6.29
    AR-15 Collapsible Stock Rubber Buttpad       Upgrade your AR-15 shooting experience with the Collapsible Stock Rubber Buttpad, engineered for performance, comfort, and improved weapon control. This high-quality rubber buttpad is designed...
    $6.29
  • Trinity Force Stocks Rubber Butt Pad

    Trinity Force Stocks Rubber Butt Pad

    $7.19
    Trinity Force Stocks Rubber Butt Pad       Upgrade your shooting experience with the Trinity Force Rubber Butt Pad, designed specifically for enhanced recoil absorption and shooting stability. Compatible with multiple Trinity Force stock...
    $7.19
  • A1Armory AR-15 Billet KeyMod Hand Stop

    Trinity Force AR-15 Billet KeyMod Hand Stop

    MSRP: $14.99
    $13.49
    AR-15 Billet KeyMod Hand Stop       Enhance your AR-15's ergonomics and precision with our AR-15 Billet KeyMod Hand Stop. Expertly machined from aircraft-grade aluminum, this compact and durable hand stop is designed to provide superior...
    MSRP: $14.99
    $13.49
  • AR-15 Receiver End Plate- Ambi 180° Sliding Attachment Point

    AR-15 180° Sling End Plate

    MSRP: $14.99
    $10.79
    AR-15 180° Sling End Plate-Sliding Attachment Point       Upgrade your AR-15 with the ultimate in sling versatility and rugged durability. The AR-15 180° Sling End Plate features a sliding attachment point, offering rapid...
    MSRP: $14.99
    $10.79
  • 4 Piece 2235.56308 Bolt Catch Kit

    4 Piece 223/5.56 Bolt Catch Kit

    MSRP: $12.99
    $5.84
    4 Piece 223/5.56/308 Bolt Catch Kit      Replacement for 223/5.56/308.Kit includes:Aluminum bolt catch, black anodized [1]Bolt catch plunger, black oxide [1]Bolt catch roll pin [1]Bolt Catch Spring...
    MSRP: $12.99
    $5.84
  • AR-15 Mil Spec Buffer Tube Kit w Mil Spec End Plate

    AR-15 Pistol Buffer Tube Kit w/ Mil Spec End Plate

    $26.99
    AR-15 Mil Spec Pistol Buffer Tube Kit   Pistol Buffer Tube. 7.3" Length. 1.25" OD Castle Nut Buffer Spring Mil Spec End Plate 3 oz Recoil Buffer Spring:Industrial Grade SteelHeat TreatedSolid Machined ConstructionBuffer Spring For Mil Spec And...
    $26.99
  • AR-15 9.3 Black Round Buffer Tube

    AR-15 9.3" Black Round Buffer Tube

    $22.28
    AR-15 9.3" Black Round Buffer Tube       Description: Upgrade your AR-15 pistol build with our precision-crafted AR-15 9.3" Black Round Buffer Tube, designed to provide enhanced stability and compatibility with SB-15/SBX pistol...
    $22.28
  • AR-15AR-10 7.3 Black Pistol Buffer Tube

    AR-15 7" Black Anodized Type lll Pistol Buffer Tube

    $17.09
    AR-15 7" Black Anodized Type lll Pistol Buffer Tube       AR-15 7" Black Anodized Type III Pistol Buffer Tube - Your Ultimate Solution for AR-15 Pistol Conversions! Upgrade your AR-15 pistol with our fixed position Mil-Spec Pistol buffer...
    $17.09
  • 200-AR Mil-Spec Steel Castle Nut & End Plates

    Bulk Wholesale AR Steel Castle Nut & End Plates

    $5.27
    Bulk Wholesale AR Steel Castle Nut & End Plates       This AR Receiver Castle Nut & Endplate combo features hardened steel construction and is melonited for finish matching and corrosion resistance. The Castle Nut & endplate...
    $5.27
  • Timney Trigger AR-15 Competition Skeletonized - 3lb Single Stage - Mil-Spec .154

    Timney Trigger AR-15 Competition Skeletonized - 3lb Single Stage

    $265.49
    Timney Trigger AR-15 Competition Skeletonized - 3lb Single Stage- Mil-Spec .154"           FREE SHIPPING! If you are going to build an AR-15 from the ground up, why settle on a heavy, gritty, Mil-Spec trigger? The...
    $265.49
  • Timney Triggers AR-15 Straight Bow Targa Two Stage Trigger-A1Armory

    Timney Triggers AR-15 Straight Bow Targa Two Stage Trigger

    $239.39
    Timney Triggers AR-15 Straight Bow Targa Two Stage Trigger        FREE SHIPPING! The Timney Triggers Targa Two Stage comes in multiple varieties, so you can pick the perfect one for your AR-15 build. This model features a long 2...
    $239.39
  • Timney Triggers Targa Two Stage AR-15 Trigger Long 1st Stage Curved Bow-A1Armory

    Timney Triggers AR-15 Curved Bow Targa Two Stage Trigger

    $239.39
    Timney Triggers AR-15 Curved Bow Targa Two Stage Trigger        FREE SHIPPING! The Timney Triggers Targa Two Stage comes in multiple varieties, so you can pick the perfect one for your AR-15 build. This model features a long 2...
    $239.39
  • CMC Triggers AR-15 / AR-10 Drop-In Single Stage Trigger - Flat - 3.5lbs-A1Armory.com

    CMC Triggers AR-15 3.5lbs Flat Drop-In Single Stage Trigger

    $202.49
    CMC Triggers AR-15 / AR-10 Drop-In Single Stage Trigger - Flat - 3.5lbs                  FREE SHIPPING! The CMC Single Stage trigger features a non-adjustable flat trigger bow with a 3.5lb pull that...
    $202.49
  • On Sale
    CMC Triggers AR-15 AR-10 Drop-In Single Stage Trigger

    CMC Triggers AR-15 3.5lbs Curved Drop-In Single Stage Trigger

    Now: $164.25
    Was: $197.50
    CMC Triggers AR-15 / AR-10 Drop-In Single Stage Trigger - Curved - 3.5lbs FREE SHIPPING! The CMC Single Stage trigger features a non-adjustable curved trigger bow with a 3.5lb pull that breaks like glass. It has almost no take-up and extremely...
    Now: $164.25
    Was: $197.50
  • On Sale
    Geissele Automatics Super Semi-Automatic Enhanced Trigger-A1Armory

    Geissele Automatics Super Semi-Automatic Enhanced 2 Stage Trigger

    Now: $211.49
    Was: $240.00
    Geissele Automatics Super Semi-Automatic Enhanced SSA-E Two Stage AR-15 Trigger .154" FREE SHIPPING! The Geissele SSA-E trigger installs in your lower receiver in the same way that a Mil-Spec trigger is installed. It uses a standard .154”...
    Now: $211.49
    Was: $240.00
  • AR-15 Alpha Stock Ambi Mil Spec Lower Parts Build Kit-A1Armory

    AR-15 Alpha Stock Ambi Mil Spec Lower Parts Build Kit

    $125.99
    AR-15 Alpha Stock Lower Build Kit      ✅ FREE SHIPPING – Fast & Reliable Delivery Whether you're building your first AR-15 or completing your next lower receiver, the AR-15 Alpha Stock Lower Build Kit has everything you need...
    $125.99
  • On Sale
    AR-15 Cobra Stock MK2 Ambi Mil Spec Lower Parts Build Kit-A1Armory

    AR-15 Cobra Stock MK2 Ambi Mil Spec Lower Parts Build Kit

    Now: $125.99
    Was: $159.99
    AR-15 Lower Build Kit Cobra MK2 Stock       ✅ Choose Standard or Ambi Configuration✅ FREE SHIPPING Upgrade your AR-15 build with this premium Lower Build Kit featuring the Cobra MK2 6-Position Stock. Designed for reliability, fit, and...
    Now: $125.99
    Was: $159.99
  • A1Armory AR-15 Omega Ambi Lower Parts Build Kit

    AR-15 Omega Stock Ambi Mil Spec Lower Parts Build Kit

    $116.99
    AR-15 Omega Lower Parts Build Kit-FREE SHIPPING       Precision. Reliability. American Craftsmanship. Upgrade or complete your AR-15 lower with the Omega Lower Parts Build Kit – a complete, high-quality solution trusted by builders...
    $116.99
  • Magpul Flat Dark Earth RTB Lower Parts Build Kit

    AR-15 Lower Parts Build Kit Flat Dark Earth Magpul MOE Stock

    $116.99
    Magpul Flat Dark Earth Lower Parts Build Kit-FREE SHIPPING!       Magpul Stock Flat Dark Earth Lower Parts Build Kit✔️ Premium Mil-Spec Components | ✔️ FDE Finish | ✔️ Trusted Magpul Quality Upgrade your AR-15 lower with the Magpul Stock...
    $116.99
  • AR-15 Lower Parts Build Kit Flat Dark Earth Minimalist Stock

    AR-15 Lower Parts Build Kit Flat Dark Earth Minimalist Stock

    $125.99
    RTB Lower Parts Build Kit – Mission First Minimalist Stock – Flat Dark Earth       Complete Your AR-15 Lower with Confidence & Style This Right To Bear Lower Parts Build Kit is the ideal solution for anyone looking to...
    $125.99
  • Stainless Steel Buffer Retainer Pin & Spring

    Stainless Steel Buffer Retainer Pin & Spring

    $4.73
    Stainless Steel Buffer Retainer Pin & Spring       Introducing our premium Stainless Steel Buffer Retainer Pin & Spring, a meticulously crafted firearm component designed to enhance the reliability and longevity of your...
    $4.73
  • On Sale
    Timber Creek Outdoors AR-15 Tungsten Buffer Tube Kit

    Timber Creek AR-15 Tungsten Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Tungsten Buffer Tube Kit       Title: Timber Creek Outdoors AR-15 Tungsten Anodized Buffer Tube Kit - Elevate Your AR Build with Precision and Style Description: Upgrade your AR-15 build with the...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek Outdoors AR-15 Robins Egg Blue Buffer Tube Kit

    Timber Creek AR-15 Robins Egg Blue Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Robins Egg Blue Buffer Tube Kit       Description: Enhance the aesthetics and performance of your AR-15 with the Timber Creek Outdoors AR-15 Robins Egg Blue Buffer Tube Kit. Meticulously crafted by Timber Creek,...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek Outdoors AR-15 Red Anodized Buffer Tube Kit

    Timber Creek AR-15 Red Anodized Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Red Anodized Buffer Tube Kit         Title: Timber Creek Outdoors AR-15 Red Anodized Buffer Tube Kit - Enhance Your Firearm Build with Precision Craftsmanship Upgrade your AR-15 platform with...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek Outdoors AR-15 Purple Anodized Buffer Tube Kit

    Timber Creek AR-15 Purple Anodized Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Purple Anodized Buffer Tube Kit       Title: Timber Creek Outdoors AR-15 Purple Anodized Buffer Tube Kit - Elevate Your AR Build with Precision and Style Description: Enhance the aesthetics and performance of...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek Outdoors AR-15 Orange Anodized Buffer Tube Kit

    Timber Creek AR-15 Orange Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Orange Anodized Buffer Tube Kit       Title: Timber Creek Outdoors AR-15 Orange Anodized Buffer Tube Kit - Elevate Your AR Build with Precision and Style Description: Enhance the aesthetic appeal...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek Outdoors AR-15 OD Green Cerakote Buffer Tube Kit

    Timber Creek AR-15 Olive Drab Green Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 OD Green Cerakote Buffer Tube Kit       Title: Timber Creek Outdoors AR-15 Olive Drab Green ODG Buffer Tube Kit - Enhance Your Build with Precision and Style Description: Elevate your AR-15 build with the...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek Outdoors AR-15 Flat Dark Earth Buffer Tube Kit-A1Armory.com

    Timber Creek AR-15 Flat Dark Earth Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Flat Dark Earth Cerakote Buffer Tube Kit         Title: Timber Creek Outdoors AR-15 Flat Dark Earth (FDE) Buffer Tube Kit - Elevate Your AR Build with Precision Craftsmanship Product Description: Enhance...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek Outdoors AR-15 Burnt Bronze Cerakote Buffer Tube Kit

    Timber Creek AR-15 Burnt Bronze Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Burnt Bronze Cerakote Buffer Tube Kit         Title: Timber Creek Outdoors AR-15 Burnt Bronze Buffer Tube Kit - Elevate Your Build with Precision and Style Description: Upgrade your AR-15 build...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek outdoors AR-15 Blue Anodized Buffer Tube Kit-A1Armory.com

    Timber Creek AR-15 Blue Anodized Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Blue Anodized Buffer Tube Kit       Timber Creek Outdoors AR-15 Blue Anodized Buffer Tube Kit – the ideal enhancement for your TCO build. With its stunning blue anodized finish, this kit not...
    Now: $67.49
    Was: $90.00
  • On Sale
    Timber Creek Outdoors black anodized hardcoat AR-15 Colored Buffer Tube Kit-A1Armory.com

    Timber Creek AR-15 Black Hardcoat Buffer Tube Kit

    Now: $67.49
    Was: $90.00
    Timber Creek Outdoors AR-15 Black Anodized Hardcoat Buffer Tube Kit       Timber Creek Outdoors AR-15 Black Anodized Buffer Tube Kit, an essential component for enhancing your TCO build. Designed with precision and durability...
    Now: $67.49
    Was: $90.00