AR-15 Lower Parts Kits

AR-15 Lower Parts Kits

When you're piecing together your dream AR-15 build, every component matters, right down to the smallest parts. At A1Armory, our AR-15 Lower Parts Kits are meticulously crafted to provide reliability and precision in every shot. These kits feature top-tier components sourced from trusted manufacturers, ensuring that your AR-15 operates smoothly and consistently. Whether you're a seasoned enthusiast or diving into the world of custom builds for the first time, our comprehensive kits make assembly a breeze. From the trigger assembly to the pivot and takedown pins, each part is engineered for durability and performance, so you can trust your rifle in any scenario. Elevate your AR-15 build with A1Armory's Lower Parts Kits and experience the difference quality makes.

  • Oops Small Parts Kit

    Oops AR Lower Receiver Small Parts Kit

    MSRP: $9.99
    $6.99
    Oops Lower Receiver Small Parts Kit       Introducing our AR-15 Small Parts Kit – the ultimate solution for enthusiasts and gunsmiths alike who know the frustration of losing essential components during maintenance or customization...
    MSRP: $9.99
    $6.99
  • Partial Lower Parts Kit.

    AR Partial Lower Parts Kit

    MSRP: $6.99
    $5.99
    AR-15 Partial Lower Parts Kit       Whether you’re upgrading or assembling your AR-15 from the ground up, the AR-15 Partial Lower Parts Kit delivers the essential components you need to build with confidence. Engineered with...
    MSRP: $6.99
    $5.99
  • Timber Creek Outdoors Flat Dark Earth Color Enhanced Parts Kit

    Timber Creek AR-15 Flat Dark Earth Lower Parts Color Kit

    MSRP: $64.99
    $54.95
    Timber Creek Outdoors Flat Dark Earth Color Enhanced Parts Kit     Timber Creek Outdoors Flat Dark Earth Color Enhanced Parts Kit, a premium upgrade package designed to elevate your firearm's performance and aesthetics. Crafted with precision...
    MSRP: $64.99
    $54.95
  • Timber Creek Outdoors Tungsten Color Enhanced Parts Kit.

    Timber Creek AR-15 Tungsten Lower Parts Color Kit

    MSRP: $64.99
    $56.99
    Timber Creek Outdoors Tungsten Color Enhanced Parts Kit         Upgrade your AR-15 with the Timber Creek Outdoors Tungsten Lower Parts Color Kit – a fusion of form and function designed to enhance your...
    MSRP: $64.99
    $56.99
  • Timber Creek Outdoors Robins Egg Blue Color Enhanced Parts Kit.

    Timber Creek AR-15 Robins Egg Blue Lower Parts Color Kit

    MSRP: $64.99
    $56.99
    Timber Creek Outdoors Robins Egg Blue Color Enhanced Parts Kit         Timber Creek Outdoors Robins Egg Blue Enhanced Parts Kit – a vibrant fusion of function and flair. Whether you're building a custom...
    MSRP: $64.99
    $56.99
  • Timber Creek Outdoors Red Color Enhanced Parts Kit.

    Timber Creek AR-15 Red Lower Parts Color Kit

    MSRP: $64.99
    $56.99
    Timber Creek Outdoors Red Color Enhanced Parts Kit     Elevate your AR-15 build with the Timber Creek Outdoors RED Lower Enhanced Parts Kit, designed for shooters who demand high performance and standout aesthetics. This premium kit...
    MSRP: $64.99
    $56.99
  • Timber Creek Outdoors Purple Color Enhanced Parts Kit.

    Timber Creek AR-15 Purple Lower Parts Color Kit

    MSRP: $64.99
    $56.99
    Timber Creek Outdoors Purple Color Enhanced Parts Kit       Upgrade your AR-15 build with the Timber Creek Outdoors Purple Lower Enhanced Parts Kit – a high-performance, American-made parts kit that combines eye-catching...
    MSRP: $64.99
    $56.99
  • Timber Creek Outdoors Orange Color Enhanced Parts Kit.

    Timber Creek AR-15 Orange Lower Parts Color Kit

    MSRP: $64.99
    $54.99
    Timber Creek Outdoors Orange Color Enhanced Parts Kit       Elevate the style and functionality of your AR-15 build with the Timber Creek Outdoors Orange Lower Enhanced Parts Kit. Precision-machined and beautifully...
    MSRP: $64.99
    $54.99
  • Timber Creek Outdoors OD Green Color Enhanced Parts Kit.

    Timber Creek AR-15 OD Green Lower Parts Color Kit

    MSRP: $64.99
    $54.99
    Timber Creek Outdoors OD Green Color Enhanced Parts Kit       Upgrade your AR-15’s functionality and aesthetics with the Timber Creek Outdoors OD Green Lower Enhanced Parts Kit. Engineered for performance and styled for impact, this...
    MSRP: $64.99
    $54.99
  • Timber Creek Outdoors Burnt Bronze Color Enhanced Parts Kit.

    Timber Creek AR-15 Burnt Bronze Lower Parts Color Kit

    MSRP: $64.99
    $54.99
    Timber Creek Outdoors Burnt Bronze Color Enhanced Parts Kit         Upgrade your AR-15 build with Timber Creek Outdoors' Burnt Bronze Lower Enhanced Parts Kit – a sleek, high-performance upgrade that...
    MSRP: $64.99
    $54.99
  • Timber Creek Outdoors Blue Color Enhanced Parts Kit

    Timber Creek AR-15 Blue Lower Parts Color Kit

    MSRP: $64.99
    $54.99
    Timber Creek Outdoors Blue Color Enhanced Parts Kit       Upgrade your rifle with style and functionality using the Timber Creek Outdoors Blue Lower Enhanced Parts Kit. Precision machined and anodized in a striking...
    MSRP: $64.99
    $54.99
  • Guntec AR-15 Anodized Orange Anti-Rotation TriggerHammer Pin Set

    Guntec AR-15 Anodized Orange Anti-Rotation Trigger/Hammer Pin Set

    $29.99
    Guntec AR-15 Anodized Orange Anti-Rotation Trigger/Hammer Pin Set       Upgrade your AR-15’s reliability and style with the Guntec USA Anodized Orange Anti-Rotation Trigger/Hammer Pin Set. Designed to eliminate pin walk and...
    $29.99
  • AR-15 Mil Spec Buffer Tube Enhanced Lower Parts Kit Combo

    AR-15 Mil Spec Buffer Tube Enhanced Lower Parts Kit Combo

    $47.99
    AR-15 Mil Spec Lower Parts Combo Kit       Upgrade your AR-15 with this all-in-one combo kit, engineered for durability, performance, and tactical versatility. Ideal for new builds or custom upgrades, this kit includes everything you need...
    $47.99
  • On Sale
    Timber Creek AR-15 black Lower Parts Color Kit.

    Timber Creek AR-15 Black Lower Parts Color Kit

    Now: $58.99
    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: $58.99
    Was: $64.99
  • A1Armory AR-15 31 piece complete lower parts kit with fire control group.

    A1Armory 31 piece Lower Parts Kit

    $49.95
    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,...
    $49.95
  • A1Armory AR15 Fire Control Group FCG lower parts kit

    A1Armory AR-15 Fire Control Group FCG

    $29.99
    A1Armory AR-15 Fire Control Group FCG       Material Excellence: The A1Armory AR-15 Fire Control Group is crafted with precision using high-quality materials to ensure exceptional durability and performance. The trigger and hammer are...
    $29.99
  • Presma 31 Piece AR-15 Lower Parts Kit With FCG.

    Presma 31 Piece AR-15 Lower Parts Kit With FCG

    MSRP: $57.99
    $43.99
    Presma 31 Piece AR-15 Lower Parts Kit With FCG                     Build with confidence using the Presma 31 Piece AR-15 Lower Parts Kit—a comprehensive, high-quality set that includes...
    MSRP: $57.99
    $43.99
  • Presma 28 Piece AR-15 Lower Parts Kit .223/5.56

    Presma 28 Piece AR-15 Lower Parts Kit .223/5.56

    MSRP: $44.99
    $34.99
    Presma 28 Piece AR-15 Lower Parts Kit [without FCG]       Upgrade your AR-15 build with the Presma 28 Piece Lower Parts Kit, a high-performance component set designed for reliability, customization, and precision. This...
    MSRP: $44.99
    $34.99
  • AR15 MIL SPEC SPRING KIT WITH TRIGGER SPRING, HAMMER SPRING, FROM A1ARMORY

    AR-15 Mil-Spec Lower Parts Spring Kit

    $4.99
    AR-15 Mil-Spec Lower Parts Spring Kit     Upgrade your AR-15 platform with this comprehensive Mil-Spec Lower Parts Spring Kit, built to exacting standards for dependable performance in every condition. Whether you're assembling a new build or...
    $4.99
  • AR15 PARTIAL LOWER PARTS KIT WITH NO TRIGGER GUARD OR MAGAZINE CATCH

    AR-15 Lower Parts Kit with FCG

    MSRP: $59.99
    $54.99
    AR-15 FCG Lower Parts Kit     Our AR-15 FCG Lower Parts Kit is designed specifically for pistol caliber builds, crafted with precision and pride right here in the USA. Whether you're upgrading or assembling a new lower, this kit delivers...
    MSRP: $59.99
    $54.99
  • AR15 Pin and Detent Kit

    AR15 Pin and Detent Kit

    $12.75
    AR-15 Phosphate Pin and Detent Kit       Upgrade your rifle build with our AR-15 Phosphate Pin and Detent Kit, expertly engineered and proudly manufactured in the USA. Whether you're building from the ground up or need a...
    $12.75
  • AR15 Lost Parts springs and detents/pins  Kit

    A1Armory AR15 Lost Parts Kit

    $16.95
    AR-15 Lost Parts Kit       Never let a lost detent or spring stall your AR-15 build again. The A1Armory AR-15 Lost Parts Kit is a must-have collection of the most commonly misplaced lower receiver components. Crafted to mil-spec standards...
    $16.95