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AR-15 Rifles, Parts, Uppers & Kits

Shop AR-15 5.56 & .223 rifles, parts, uppers, & more at Palmetto State Armory. Find high-quality AR-15s, trusted brands, and expertly crafted components. Customize or build from scratch with our vast inventory of barrels, stocks, and triggers. Palmetto State Armory is your destination for the best AR-15 essentials at competitive prices.

Shop AR-15 rifles, parts, uppers, & more at Palmetto State Armory. Find high-quality guns such as AR-15 .223 rifles and AR pistols from trusted brands, and expertly crafted components. Customize or build from scratch with our vast inventory of barrels, stocks, and triggers. Palmetto State Armory is your destination for the best AR-15 essentials at competitive prices.

Shop the complete AR-15 platform at Palmetto State Armory, your destination for rifles, uppers, lowers, parts, and build kits. Whether you’re buying a factory-built rifle or assembling a custom AR-15 from the ground up, you’ll find trusted brands, proven components, and configurations for every purpose. Explore options in popular calibers like 5.56 NATO, .300 Blackout, and more. Build it your way or buy it ready to run—all at everyday low prices.

Rifles

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Uppers

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AR-15 Parts

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.338 ARC

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Left Handed AR-15

Left Handed AR-15
Featured Products
  1. R&D Precision AR45 Bolt Carrier Group
    R&D Precision AR45 Bolt Carrier Group
    Rating:
    87%
    (9)
    Regular Price $149.99 Special Price $49.99
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  2. Daniel Defense 5.56mm 32rd Capacity Magazine, Black – 13-072-16539-006
    Daniel Defense 5.56mm 32rd Capacity Magazine, Black – 13-072-16539-006
    Rating:
    98%
    (18)
    Regular Price $26.99 Special Price $23.99
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  3. PSA Complete Stealth Classic Lower, Wild Cat Gray
    PSA Complete Stealth Classic Lower, Wild Cat Gray
    Rating:
    98%
    (150)
    Regular Price $199.99 Special Price $119.99
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  1. Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Black - DBK1717K005

    Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Black - DBK1717K005

    Rating:
    100%
    (1)
    Regular Price $598.99 Special Price $538.99
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  2. Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Black - DB171AK001

    Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Black - DB171AK001

    Regular Price $741.99 Special Price $640.99
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  3. Radian Weapons Model 1 .223 Wylde AR Rifle with 16" Barrel, Black - R0041

    Radian Weapons Model 1 .223 Wylde AR Rifle with 16" Barrel, Black - R0041

    Regular Price $3,529.99 Special Price $3,179.99
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  4. Radian Weapons Model 1 .223 Wylde AR Rifle with 16" Barrel, Flat Dark Earth - R0540

    Radian Weapons Model 1 .223 Wylde AR Rifle with 16" Barrel, Flat Dark Earth - R0540

    Regular Price $3,529.99 Special Price $3,179.99
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  5. FN FN 15 DMR3 5.56x45mm 18" 30rd Semi-Auto AR Rifle, Tungsten - 36100683

    FN FN 15 DMR3 5.56x45mm 18" 30rd Semi-Auto AR Rifle, Tungsten - 36100683

    Regular Price $2,453.99 Special Price $2,209.99
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  6. Noveske Gen 4 .223 Remington AR Rifle with 16" Barrel, Black - 2000563

    Noveske Gen 4 .223 Remington AR Rifle with 16" Barrel, Black - 2000563

    Regular Price $3,270.99 Special Price $2,945.99
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  7. Noveske Gen 4 .223 Remington AR Rifle with 17" Barrel, Black - 2000567

    Noveske Gen 4 .223 Remington AR Rifle with 17" Barrel, Black - 2000567

    Regular Price $3,533.99 Special Price $3,182.99
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  8. Black Rain Ordnance .223 Remington AR Rifle with 16" Barrel, Red, White, Blue - BROPATAMERICA

    Black Rain Ordnance .223 Remington AR Rifle with 16" Barrel, Red, White, Blue - BROPATAMERICA

    Regular Price $1,664.99 Special Price $1,499.99
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  9. Midwest Industries .223 Wylde AR Rifle with 16" Barrel, Black - MIFN16CRM14

    Midwest Industries .223 Wylde AR Rifle with 16" Barrel, Black - MIFN16CRM14

    $1,285.00
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  10. American Defense .223 Remington AR Rifle with 16" Barrel, Black - ADM4R5BLK16M1MLOK

    American Defense .223 Remington AR Rifle with 16" Barrel, Black - ADM4R5BLK16M1MLOK

    Regular Price $1,941.99 Special Price $1,748.99
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  11. Bravo Company .223 Remington AR Rifle with 16" Barrel, Black - 750133

    Bravo Company .223 Remington AR Rifle with 16" Barrel, Black - 750133

    Regular Price $1,986.99 Special Price $1,805.99
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  12. Unbranded AR .223 Remington AR Rifle with 16" Barrel, Black - 223WYFS0000

    Unbranded AR .223 Remington AR Rifle with 16" Barrel, Black - 223WYFS0000

    Regular Price $660.99 Special Price $570.99
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  13. Diamondback DB15 6.5 Grendel AR Rifle with 18" Barrel, Black - DB1732N001

    Diamondback DB15 6.5 Grendel AR Rifle with 18" Barrel, Black - DB1732N001

    Regular Price $1,166.99 Special Price $1,050.99
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  14. Bersa .223 Remington AR Rifle with 16" Barrel, Black - BAR15RMGP

    Bersa .223 Remington AR Rifle with 16" Barrel, Black - BAR15RMGP

    Regular Price $879.99 Special Price $799.99
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  15. Diamondback DB15 .300 AAC Blackout AR Rifle with 16" Barrel, Black - DB1721K001

    Diamondback DB15 .300 AAC Blackout AR Rifle with 16" Barrel, Black - DB1721K001

    Rating:
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    (2)
    Regular Price $1,082.99 Special Price $974.99
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  16. Radian Weapons Model 1 .223 Wylde AR Rifle with 16" Barrel, Gray - R0042

    Radian Weapons Model 1 .223 Wylde AR Rifle with 16" Barrel, Gray - R0042

    Regular Price $3,529.99 Special Price $3,179.99
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  17. WMD Guns .223 Remington AR Rifle with 16" Barrel, Silver - NIBX556

    WMD Guns .223 Remington AR Rifle with 16" Barrel, Silver - NIBX556

    Regular Price $1,249.99 Special Price $1,125.99
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  18. Spikes Tactical .223 Remington AR Rifle with 14.5" Barrel, Black - STR5525CM2D

    Spikes Tactical .223 Remington AR Rifle with 14.5" Barrel, Black - STR5525CM2D

    $1,530.00
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  19. Rock River CAR A4 .223 Remington AR Rifle with 16" Barrel, Black - AR1850

    Rock River CAR A4 .223 Remington AR Rifle with 16" Barrel, Black - AR1850

    Regular Price $1,004.99 Special Price $912.99
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  20. Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Flat Dark Earth - DB1758K061

    Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Flat Dark Earth - DB1758K061

    Regular Price $1,390.99 Special Price $1,252.99
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  21. Battle Arms .223 Remington AR Rifle with 16" Barrel, Black - WORKHORSE017

    Battle Arms .223 Remington AR Rifle with 16" Barrel, Black - WORKHORSE017

    Regular Price $1,112.99 Special Price $1,010.99
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  22. FN FN 15 DMR3 5.56x45mm 18" 30rd Semi-Auto AR Rifle, Black - 36100669

    FN FN 15 DMR3 5.56x45mm 18" 30rd Semi-Auto AR Rifle, Black - 36100669

    Regular Price $2,756.99 Special Price $2,039.99
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  23. FN 15 DMR3 .223 Remington AR Rifle with 18" Barrel, Flat Dark Earth - 36100676

    FN 15 DMR3 .223 Remington AR Rifle with 18" Barrel, Flat Dark Earth - 36100676

    Regular Price $2,986.99 Special Price $2,209.99
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  24. FN FN15 TAC3 .223 Remington AR Rifle with 16" Barrel, Black - 36100632

    FN FN15 TAC3 .223 Remington AR Rifle with 16" Barrel, Black - 36100632

    Regular Price $1,847.99 Special Price $1,699.99
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  1. Rifles 2064
  2. Pistols 887
  3. Uppers 1360
  4. Kits 757
  5. Lower Receivers 713
  6. Parts 9220
  7. Suppressors 165
  8. Left Handed AR-15 7
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AR-15 Buyer's Guide: Build or Buy?

At Palmetto State Armory, we believe in the right to keep and bear arms—and the right to build them. One of the first choices you'll face is whether to buy a complete rifle or build one from parts.

Option 1: Buying Complete

Best for: First-time owners and those who want a "grab-and-go" solution.

Buying a Complete AR-15 ensures that all components (upper, lower, buffer system) are factory-tested to work together perfectly. It comes ready to shoot right out of the box (just add an optic!).

Option 2: Building (The PSA Way)

Best for: Customizers and those looking to save money.

By purchasing a Rifle Kit and a Stripped Lower Receiver separately, you can save 11% Federal Excise Tax (FET) and learn exactly how your rifle works. Plus, you get to choose every part, from the trigger to the barrel length.

Understanding Gas Systems: Carbine vs. Mid-Length

The gas system length determines how the rifle cycles. Choosing the right one affects recoil and reliability.

  • Carbine Length (7"): The military standard (M4). It is punchy and reliable but has a sharper recoil impulse. Standard on most 14.5" and 16" barrels.
  • Mid-Length (9"): Rapidly becoming the civilian favorite for 16" barrels. It provides a smoother recoil impulse and less wear on parts because the gas pressure drops slightly before cycling the bolt.
  • Rifle Length (12"): Used on 18" and 20" barrels (like the M16). It offers the smoothest shooting experience possible.

Common Questions About AR-15s

What is the difference between 5.56 NATO and .223 Remington?

While they look identical, 5.56 NATO is loaded to a higher pressure than .223 Remington.
The Rule: You CAN shoot .223 ammo in a 5.56 barrel safely. You generally SHOULD NOT shoot 5.56 ammo in a barrel marked strictly ".223 Remington" (unless it is a .223 Wylde). PSA's 5.56 barrels and Complete Uppers can safely shoot both.

What is a "Mil-Spec" AR-15?

"Mil-Spec" stands for Military Specification. It refers to the materials and dimensions used by the US Military (e.g., 7075-T6 Aluminum for receivers, Carpenter 158 Steel for bolts). A Mil-Spec rifle ensures that you can swap parts with almost any other standard AR-15 on the market.

Can I hunt with an AR-15?

Absolutely. The AR-15 is a "Modern Sporting Rifle." While 5.56 is excellent for varmint hunting (coyotes, hogs), many hunters prefer larger calibers. We offer AR-15s in 6.5 Grendel (great for deer) and .300 Blackout (great for hogs and suppressed hunting).

Is the AR-15 a "Common Use" rifle?

Yes. With over 20 million in circulation, the AR-15 is the most popular rifle in America. Its modularity allows it to be used for home defense, competition, hunting, and recreational target shooting.