- Free shipping over $200 & Fast Same-Day Shipping on all orders placed before 1 p.m. EST M-F / 11 a.m. SAT | All featured products represent In-Store Availability -

Lower Parts Kits

Items: 128 of 28, per page
Drop items here to shop
Product has been added to your cart
  • Product is out of stock
    Anderson Manufacturing Gen 2 Lower Parts Kit AR-15 with Black Trigger and Hammer

    Not rated yet
    • $52.95
    Out of stock
  • Product is out of stock
    Anderson Manufacturing Gen 2 Lower Parts Kit AR-15 with Stainless Steel Trigger and Hammer

    Score: 4.00 (votes: 1)
    1
    • $52.95
    Out of stock
    • 12% less
  • Product is out of stock
    Armaspec AR Spare Parts Kit

    Not rated yet
    • $15.19
    Out of stock
  • Drag and drop me to the cart
    Armaspec Superlight Lower Parts Kit .223/5.56 - Black

    Not rated yet
    • $76.49
    In stock
  • Product is out of stock
    Armaspec Superlight Lower Parts Kit .223/5.56 - Blue

    Not rated yet
    • $76.49
    Out of stock
  • Product is out of stock
    Armaspec Superlight Lower Parts Kit .223/5.56 - FDE

    Score: 5.00 (votes: 1)
    1
    • $76.49
    Out of stock
  • Product is out of stock
    Armaspec Superlight Lower Parts Kit .223/5.56 - Red

    Not rated yet
    • $76.49
    Out of stock
  • Product is out of stock
    Armaspec Superlight Lower Parts Kit .223/5.56 - Silver

    Not rated yet
    • $76.49
    Out of stock
  • Product is out of stock
    Battle Arms Development 3-Piece Enhanced Lower Parts Kit

    Not rated yet
    • $33.95
    Out of stock
  • Drag and drop me to the cart
    Battle Arms Development Enhanced Complete Lower Parts Kit

    Not rated yet
    • $125.95
    In stock
  • Drag and drop me to the cart
    CMMG Complete Lower Parts Kit - AR-15

    Not rated yet
    • $68.95
    In stock
  • Drag and drop me to the cart
    CMMG Gunbuilder's Lower Parts Kit - AR-15

    Not rated yet
    • $39.95
    In stock
  • Drag and drop me to the cart
    Fortis AR Enhanced Detent & Spring Kit - Stainless Steel (Heat Treated)

    Not rated yet
    • $26.95
    In stock
  • Drag and drop me to the cart
    Guntec USA AR-15 Builders Kit With Ambi Safety - Anodized Blue

    Not rated yet
    • $94.95
    In stock
  • Drag and drop me to the cart
    Guntec USA AR-15 Builders Kit With Ambi Safety - Anodized Clear

    Not rated yet
    • $94.95
    In stock
  • Product is out of stock
    Guntec USA AR-15 Builders Kit With Ambi Safety - Anodized Gold

    Not rated yet
    • $94.95
    Out of stock
  • Drag and drop me to the cart
    Guntec USA AR-15 Builders Kit With Ambi Safety - Anodized Orange

    Not rated yet
    • $94.95
    In stock
  • Drag and drop me to the cart
    Guntec USA AR-15 Builders Kit With Ambi Safety - Anodized Purple

    Not rated yet
    • $94.95
    In stock
  • Drag and drop me to the cart
    Guntec USA AR-15 Builders Kit With Ambi Safety - Anodized Red

    Score: 4.00 (votes: 1)
    1
    • $94.95
    In stock
  • Drag and drop me to the cart
    ODIN Works AR-15 Lower Parts Kit - Black

    Not rated yet
    • $56.05
    In stock
  • Drag and drop me to the cart
    R1 Tactical AR-15 Lower Parts Kit minus Trigger Group

    Not rated yet
    • $30.95
    In stock
  • Product is out of stock
    R1 Tactical AR-15 Lower Parts Kit with Ambi Selector minus Trigger Group

    Not rated yet
    • $39.95
    Out of stock
  • Drag and drop me to the cart
    R1 Tactical AR-15 Lower Parts Kit with Trigger Group

    Not rated yet
    • $45.95
    In stock
  • Drag and drop me to the cart
    R1 Tactical Essential Pins and Springs Build Kit - Black

    Not rated yet
    • $10.95
    In stock
  • Product is out of stock
    R1 Tactical Essential Pins and Springs Build Kit - Stainless Steel

    Not rated yet
    • $12.95
    Out of stock
  • Drag and drop me to the cart
    RISE Armament AR-15 Lower Parts Kit

    Not rated yet
    • $44.99
    In stock
  • Drag and drop me to the cart
    Strike Industries AR Enhanced Lower Receiver Parts Less Trigger, Hammer and Disconnector

    Score: 5.00 (votes: 1)
    1
    • $53.95
    In stock
  • Drag and drop me to the cart
    Strike Industries AR-15 Enhanced Lower Parts Kit with Trigger - Black

    Not rated yet
    • $76.95
    In stock
Bestsellers
  • Drag and drop me to the cart
    R1 Tactical Essential Pins and Springs Build Kit - Black

    Not rated yet
    • $10.95
    In stock
  • Product is out of stock
    Anderson Manufacturing Gen 2 Lower Parts Kit AR-15 with Black Trigger and Hammer

    Not rated yet
    • $52.95
    Out of stock
  • Product is out of stock
    Armaspec AR Spare Parts Kit

    Not rated yet
    • $15.19
    Out of stock
  • Product is out of stock
    Anderson Manufacturing Gen 2 Lower Parts Kit AR-15 with Stainless Steel Trigger and Hammer

    Score: 4.00 (votes: 1)
    1
    • $52.95
    Out of stock
    • 12% less