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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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Lower Receivers

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AR-15 Parts

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Triggers

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.338 ARC

.338 ARC
Magazines

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Pistols

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Kits

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Suppressors

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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%
    (14)
    Regular Price $149.99 Special Price $29.99
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  2. PSA AR-15 16" Mid-Length 5.56 NATO 1/7 Nitride 13.5" Lightweight M-Lok MOE EPT Rifle w/MBUS Sight Set
    PSA AR-15 16" Mid-Length 5.56 NATO 1/7 Nitride 13.5" Lightweight M-Lok MOE EPT Rifle w/MBUS Sight Set
    Rating:
    98%
    (556)
    Regular Price $599.99 Special Price $549.99
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  3. LWRC IC .223 Remington AR Lower, Black - ICL5B
    LWRC IC .223 Remington AR Lower, Black - ICL5B
    Regular Price $866.99 Special Price $649.99
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  1. One Horse OH-15 16" 5.56 NATO Carbine-Length AR Rifle, Black

    One Horse OH-15 16" 5.56 NATO Carbine-Length AR Rifle, Black

    $579.99
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  2. One Horse OH-15 16" 5.56 NATO Mid-Length AR RIfle, Black

    One Horse OH-15 16" 5.56 NATO Mid-Length AR RIfle, Black

    $499.99
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  3. Harrington & Richardson 606 20" 5.56 NATO Rifle, Black

    Harrington & Richardson 606 20" 5.56 NATO Rifle, Black

    $1,249.99
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  4. ATI Milsport 7.5" 5.56 NATO AR Pistol w/ Blade Brace, Black

    ATI Milsport 7.5" 5.56 NATO AR Pistol w/ Blade Brace, Black

    Regular Price $499.99 Special Price $449.99
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  5. ATI Milsport 8.5" .300 Blackout AR Pistol, Black

    ATI Milsport 8.5" .300 Blackout AR Pistol, Black

    Regular Price $499.99 Special Price $449.99
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  6. Diamondback Firearms Carbon DB-15 8" .300 Blackout AR Pistol w/ SBA3 Brace, Black

    Diamondback Firearms Carbon DB-15 8" .300 Blackout AR Pistol w/ SBA3 Brace, Black

    Regular Price $780.00 Special Price $679.99
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  7. Franklin Armory FAI-15 Stripped Lower, Black

    Franklin Armory FAI-15 Stripped Lower, Black

    Regular Price $79.99 Special Price $69.99
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  8. Daniel Defense DDM4 10.3" 5.56 NATO AR Pistol w/ Maxim PDW Brace, Black

    Daniel Defense DDM4 10.3" 5.56 NATO AR Pistol w/ Maxim PDW Brace, Black

    Regular Price $2,199.99 Special Price $2,043.00
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  9. Daniel Defense DDM4 10.3" 5.56 NATO AR Pistol w/ Maxim PDW Brace, Bazooka Green

    Daniel Defense DDM4 10.3" 5.56 NATO AR Pistol w/ Maxim PDW Brace, Bazooka Green

    Regular Price $2,199.99 Special Price $2,043.00
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  10. Sig Sauer M400 Forge 16" 5.56 NATO AR Rifle w/ Romeo Red Dot, Moss Green

    Sig Sauer M400 Forge 16" 5.56 NATO AR Rifle w/ Romeo Red Dot, Moss Green

    $1,099.99
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  11. NEMO Arms Battle-Light 18" 6mm Arc AR Rifle, Mil-Spec Green

    NEMO Arms Battle-Light 18" 6mm Arc AR Rifle, Mil-Spec Green

    Regular Price $3,690.99 Special Price $3,324.99
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  12. NEMO Arms Battle-Light 8" .300 BLK AR Pistol, Tungsten

    NEMO Arms Battle-Light 8" .300 BLK AR Pistol, Tungsten

    Regular Price $3,163.99 Special Price $2,849.99
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  13. NEMO Arms Battle-Light 8" 5.56 NATO AR Pistol, Burnt Bronze

    NEMO Arms Battle-Light 8" 5.56 NATO AR Pistol, Burnt Bronze

    Regular Price $3,163.99 Special Price $2,849.99
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  14. NEMO Arms Battle-Light Steel 20" 22 Arc AR Rifle, Nemo Sage Green

    NEMO Arms Battle-Light Steel 20" 22 Arc AR Rifle, Nemo Sage Green

    Regular Price $3,163.99 Special Price $2,849.99
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  15. NEMO Arms Battle-Light 16" .223 Wylde AR Rifle, Burnt Bronze

    NEMO Arms Battle-Light 16" .223 Wylde AR Rifle, Burnt Bronze

    Regular Price $3,163.99 Special Price $2,849.99
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  16. NEMO Arms XO Steel 16" .308 Winchester AR Rifle, Tungsten

    NEMO Arms XO Steel 16" .308 Winchester AR Rifle, Tungsten

    Regular Price $4,745.99 Special Price $4,274.99
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  17. NEMO Arms XO Steel 20" .308 Winchester AR Rifle, Tungsten

    NEMO Arms XO Steel 20" .308 Winchester AR Rifle, Tungsten

    $4,499.00
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  18. NEMO Arms XO Steel 22" 6.5 Creedmoor AR Rifle, Tungsten

    NEMO Arms XO Steel 22" 6.5 Creedmoor AR Rifle, Tungsten

    Regular Price $4,217.99 Special Price $3,799.99
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  19. Diamondback Firearms Carbon DB15 16" 5.56 NATO AR Rifle, Jesse James Blue

    Diamondback Firearms Carbon DB15 16" 5.56 NATO AR Rifle, Jesse James Blue

    Regular Price $766.00 Special Price $699.99
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  20. Diamondback DB15 Carbon 16" 7.62x39mm AR Rifle, Black

    Diamondback DB15 Carbon 16" 7.62x39mm AR Rifle, Black

    Regular Price $791.99 Special Price $712.99
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  21. US PALM STORM CAT4 11.5" 5.56 NATO AR Pistol, Black

    US PALM STORM CAT4 11.5" 5.56 NATO AR Pistol, Black

    Regular Price $1,444.99 Special Price $1,300.99
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  22. US PALM STORM CAT4 16" 5.56 NATO AR Rifle, Black

    US PALM STORM CAT4 16" 5.56 NATO AR Rifle, Black

    Regular Price $1,444.99 Special Price $1,299.99
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  23. Daniel Defense MK18 10.3" 5.56 NATO SBR, Black

    Daniel Defense MK18 10.3" 5.56 NATO SBR, Black

    $2,180.00
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  24. VKTR VK1 13.7" P&W 5.56 NATO AR Rifle, Armor Black

    VKTR VK1 13.7" P&W 5.56 NATO AR Rifle, Armor Black

    $2,399.00
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  1. Rifles 2097
  2. Pistols 931
  3. Uppers 1424
  4. Kits 747
  5. Lower Receivers 855
  6. Parts 9300
  7. Suppressors 175
  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.