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 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
  • 300-AR Mil-Spec Steel Castle Nut & End Plates

    Bulk Wholesale AR Steel Castle Nut & End Plates

    MSRP: $2,097.99
    $1,238.39
    Bulk Wholesale AR Steel Castle Nut & End Plates     300 Minimum This AR Receiver Castle Nut & Endplate combo features hardened steel construction and is melonited for finish matching and corrosion resistance. The Castle Nut &...
    MSRP: $2,097.99
    $1,238.39
  • 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
  • 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     Description: Elevate your AR-15 build with the Timber Creek Outdoors (TCO) AR-15 Olive Drab Green (ODG) Buffer Tube Kit. This meticulously crafted kit is designed to provide...
    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          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
  • AR-15 Black Steel Ambidextrous Enhanced Safety Selector Switch

    AR-15 Black New Steel Ambi Enhanced Safety Selector Switch

    MSRP: $24.99
    $16.19
    AR-15 Black Steel Ambidextrous Enhanced Safety Selector Switch       Upgrade your AR-15 or AR-10 lower receiver with the Black Steel Ambidextrous Enhanced Safety Selector Switch — a rugged, high-performance component built for both...
    MSRP: $24.99
    $16.19
  • Timber Creek AR-15 Enforcer Black Mini Angled Foregrip

    Timber Creek AR-15 Black Enforcer Mini Angled Foregrip

    MSRP: $69.99
    $53.06
    Timber Creek AR-15 Enforcer Black Mini Angled Foregrip              Title: "Enhance Your AR-15 Control with Timber Creek's Enforcer Black Mini Angled Foregrip - Lightweight Precision for Tactical...
    MSRP: $69.99
    $53.06
  • On Sale
    Timber Creek AR-15 black Lower Parts Color Kit.

    Timber Creek AR-15 Black Lower Parts Color Kit

    Now: $53.09
    Was: $64.99
    Timber Creek Outdoors Black Color Enhanced Parts Kit       Description: Upgrade your AR with the Timber Creek Outdoors Black Color Enhanced Parts Kit, featuring precision-engineered components designed to enhance both functionality and...
    Now: $53.09
    Was: $64.99
  • On Sale
    TIMBER CREEK Black MLOK Rugged Barrier Stop

    Timber Creek Black MLOK Rugged Barrier Stop

    Now: $29.69
    Was: $40.00
    Timber Creek Black MLOK Rugged Barrier Stop   Timber Creek Black MLOK Rugged Barrier Stop, a revolutionary accessory designed to enhance the stability and accuracy of your rifle when braced against various barriers. Crafted with precision and...
    Now: $29.69
    Was: $40.00
  • Timber Creek AR-15 Black Lower Parts Kit.

    Timber Creek Outdoors AR-15 Black Lower Parts Kit

    MSRP: $99.99
    $80.99
    Timber Creek Outdoors AR-15 Black Lower Parts Kit Elevate your next AR build with the Timber Creek AR-15 Black Lower Parts Kit, a precision-crafted solution for shooters who demand reliability, durability, and tactical style. Built from aircraft-grade...
    MSRP: $99.99
    $80.99
  • AR-15 Mil Spec Buffer Tube With End Plate And Castle Nut

    AR15 Mil Spec Buffer Tube With End Plate And Castle Nut

    MSRP: $22.99
    $17.09
    AR-15 Mil Spec Buffer Tube With End Plate And Castle Nut       Upgrade your AR-15 with a battle-tested buffer tube kit engineered for reliability, strength, and smooth performance. Crafted from high-grade T6 aluminum and proudly made...
    MSRP: $22.99
    $17.09
  • AR-15 Red Steel Dual Ambidextrous Safety Selector Lever

    AR-15 Red Dual Safety Selector Lever

    MSRP: $32.99
    $22.49
    AR-15 Red Steel Dual Ambidextrous Safety Selector Lever       AR-15 Red Dual Safety Selector Lever, a precision-engineered upgrade designed to elevate the functionality and aesthetics of your AR platform. This ambidextrous safety selector...
    MSRP: $32.99
    $22.49
  • AR-15 FDE Steel Dual Ambidextrous Safety Selector Lever

    AR-15 FDE Dual Ambidextrous Safety Selector Lever

    MSRP: $29.99
    $23.39
    AR-15 FDE Steel Dual Ambidextrous Safety Selector Lever       AR-15 Flat Dark Earth (FDE) Cerakote Steel Dual Ambidextrous Safety Selector Lever, a precision-engineered enhancement designed to elevate your firearm's functionality and...
    MSRP: $29.99
    $23.39
  • AR15 Breach 1.0 Pistol Brace

    AR15 Breach 1.0 Pistol Brace

    $20.69
    AR15 Breach 1.0 Pistol Brace      Upgrade your AR-15 pistol build with the Breach 1.0 Pistol Brace, engineered for simplicity, reliability, and improved control. Designed to be snag-free and user-friendly, the Breach 1.0 delivers...
    $20.69
  • AR15 Cobra Stock MK2 Lower Part-www.A1Armory.com

    Trinity Force AR15 Cobra Stock MK2

    $40.49
    Trinity Force AR15 Cobra Stock MK2   GET THE MK2 BUFFER TUBE KIT HERE Patent pending locking system QD sockets / 1.5″ Sling loops Snag-free design to prevent any tangles with gear Two different types of ambidextrous sling mounting options,...
    $40.49
  • Trinity Force AR15 DMR Grip With Storage

    Trinity Force AR15 DMR Grip With Storage

    MSRP: $18.99
    $17.09
    Trinity Force AR15 DMR Grip With Storage       Upgrade your AR-15/M4 build with the ergonomic and versatile Trinity Force DMR Grip. Designed for tactical performance and ultimate comfort, this pistol grip seamlessly mounts onto standard...
    MSRP: $18.99
    $17.09
  • AR15 Trinity Force 17' Tactical Polymer Grip lower part-www.A1Armory.com

    Trinity Force 17° AR15 Tactical Polymer Grip

    MSRP: $19.99
    $12.59
    Trinity Force AR15 17° Polymer Grip           Enhance your AR-15 with the Trinity Force AR15 17° Polymer Grip, designed specifically for improved ergonomics and tactical performance. Ideal for shooters seeking better...
    MSRP: $19.99
    $12.59
  • Trinity Force AR15 Alpha Stock

    Trinity Force AR15 Alpha Stock

    MSRP: $39.99
    $28.79
    Trinity Force Alpha Stock       Enhance your rifle’s ergonomics, stability, and performance with the Trinity Force Alpha Stock. Designed for serious shooters and tactical applications, this versatile stock delivers adjustability,...
    MSRP: $39.99
    $28.79