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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

.338 ARC
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Pistols

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Kits

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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. PSA 10.5" Pistol Length 300BO 1/7 Nitride 9" Lightweight Hex MLOK MOE EPT SBA5 Pistol, FDE

    PSA 10.5" Pistol Length 300BO 1/7 Nitride 9" Lightweight Hex MLOK MOE EPT SBA5 Pistol, FDE

    Regular Price $899.99 Special Price $559.99
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  2. PSA 8.5" Pistol Length 5.56 NATO 1/7 Nitride 7" Lightweight Hex MLOK Classic EPT SBA5 Pistol

    PSA 8.5" Pistol Length 5.56 NATO 1/7 Nitride 7" Lightweight Hex MLOK Classic EPT SBA5 Pistol

    Regular Price $799.99 Special Price $529.99
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  3. Daniel Defense DDM4 HUNTER 18" 6.8 SPC, KRYPTEK HIGHLANDER

    Daniel Defense DDM4 HUNTER 18" 6.8 SPC, KRYPTEK HIGHLANDER

    $1,719.99
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  4. Daniel Defense DDM4 HUNTER 16" 300 BO, KRYPTEK HIGHLANDER

    Daniel Defense DDM4 HUNTER 16" 300 BO, KRYPTEK HIGHLANDER

    $1,699.99
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  5. Daniel Defense DDM4 HUNTER 16" 300 BO, KRYPTEK HIGHLANDER

    Daniel Defense DDM4 HUNTER 16" 300 BO, KRYPTEK HIGHLANDER

    $1,699.99
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  6. Daniel Defense DDM4 MK12 18" 5.56 NATO, TORNADO Grey

    Daniel Defense DDM4 MK12 18" 5.56 NATO, TORNADO Grey

    $1,999.99
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  7. PSA Custom Jakl 5.56 13.7" Rifle W/ PSA Custom Flatbow FCG, Romeo 5 Red dot, Mbus back up sights - Outline

    PSA Custom Jakl 5.56 13.7" Rifle W/ PSA Custom Flatbow FCG, Romeo 5 Red dot, Mbus back up sights - Outline

    $1,999.99
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  8. PSA 10.5" Pistol Length 300BO 1/7 Nitride 9" Lightweight Hex MLOK MOE EPT SBA5 Pistol

    PSA 10.5" Pistol Length 300BO 1/7 Nitride 9" Lightweight Hex MLOK MOE EPT SBA5 Pistol

    Regular Price $819.99 Special Price $559.99
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  9. PSA 8.5" Pistol Length 300BO 1/7 Nitride 7" Lightweight Hex MLOK MOE EPT SBA5 Pistol

    PSA 8.5" Pistol Length 300BO 1/7 Nitride 7" Lightweight Hex MLOK MOE EPT SBA5 Pistol

    Regular Price $819.99 Special Price $549.99
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  10. PSA 8.5" Pistol Length 5.56 NATO 1/7 Nitride 7" Lightweight Hex MLOK MOE EPT SBA5 Pistol

    PSA 8.5" Pistol Length 5.56 NATO 1/7 Nitride 7" Lightweight Hex MLOK MOE EPT SBA5 Pistol

    Regular Price $829.99 Special Price $549.99
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  11. PSA 8.5" Pistol Length 5.56 NATO 1/7 Nitride 7" Lightweight MLOK MOE EPT SBA5 Pistol

    PSA 8.5" Pistol Length 5.56 NATO 1/7 Nitride 7" Lightweight MLOK MOE EPT SBA5 Pistol

    Regular Price $829.99 Special Price $549.99
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  12. PSA 7.5" Pistol Length 300BO 1/7 Nitride 6" Lightweight Hex MLOK MOE EPT SBA5 Pistol

    PSA 7.5" Pistol Length 300BO 1/7 Nitride 6" Lightweight Hex MLOK MOE EPT SBA5 Pistol

    Regular Price $819.99 Special Price $539.99
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  13. PSA Guardsman-15 10.3" Carbine-Length 5.56 NATO 1/7 CL Phosphate 9" MLOK SBR

    PSA Guardsman-15 10.3" Carbine-Length 5.56 NATO 1/7 CL Phosphate 9" MLOK SBR

    $699.99
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  14. Ruger Harrier Magpul 16.1" 5.56 Nato 30rd Rifle, Black - 28600

    Ruger Harrier Magpul 16.1" 5.56 Nato 30rd Rifle, Black - 28600

    Regular Price $749.99 Special Price $649.99
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  15. PSA 7.5" Pistol-Length 300AAC Nitride 6" M-Lok - w/o BCG & CH

    PSA 7.5" Pistol-Length 300AAC Nitride 6" M-Lok - w/o BCG & CH

    Regular Price $319.99 Special Price $199.99
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  16. PSA Sabre-18 Mod S 10.3" 300BLK 1:5 CHF CL with Quad Rail Pistol w/ HAR-15 Brace, FDE Anodized

    PSA Sabre-18 Mod S 10.3" 300BLK 1:5 CHF CL with Quad Rail Pistol w/ HAR-15 Brace, FDE Anodized

    $1,099.99
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  17. CNC Firearms Daniel Defense DDM4 V7 16" 5.56 NATO w/ Vortex AMG UH-1 Red Dot, Duck Camo

    CNC Firearms Daniel Defense DDM4 V7 16" 5.56 NATO w/ Vortex AMG UH-1 Red Dot, Duck Camo

    Regular Price $2,776.99 Special Price $2,500.99
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  18. PSA Custom .223 Wylde 16" 1/8 Rifle W/ 13.5" PSA Rail, PSA Custom Flatbow FCG, Warlock Green

    PSA Custom .223 Wylde 16" 1/8 Rifle W/ 13.5" PSA Rail, PSA Custom Flatbow FCG, Warlock Green

    $1,099.99
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  19. PSA Custom 18" .223 Wylde 1/7 SS Rifle W/ 15" PSA Rail, PSA Custom Flatbow FCG - 50 Shades of FDE

    PSA Custom 18" .223 Wylde 1/7 SS Rifle W/ 15" PSA Rail, PSA Custom Flatbow FCG - 50 Shades of FDE

    $1,199.99
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  20. PSA 11.5" Carbine 5.56 1/7 Nitride 10.5" Lightweight Hex MLOK Classic Stealth HAR-15 Pistol, FDE

    PSA 11.5" Carbine 5.56 1/7 Nitride 10.5" Lightweight Hex MLOK Classic Stealth HAR-15 Pistol, FDE

    Rating:
    100%
    (1)
    Regular Price $699.99 Special Price $449.99
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  21. PSA 8.5" 300 Blackout Nitride 7" Lightweight Hex MLOK Classic Stealth HAR-15 Pistol, FDE

    PSA 8.5" 300 Blackout Nitride 7" Lightweight Hex MLOK Classic Stealth HAR-15 Pistol, FDE

    Regular Price $699.99 Special Price $449.99
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  22. Diamondback DB15 16" .300BLK Carbon Rifle

    Diamondback DB15 16" .300BLK Carbon Rifle

    Regular Price $793.99 Special Price $714.99
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  23. PSA Olcan 14.5" 300BLK Keymo Rifle, FDE

    PSA Olcan 14.5" 300BLK Keymo Rifle, FDE

    Rating:
    60%
    (1)
    $1,399.99
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  24. PSA Olcan 14.5" 300BLK ASR Rifle, Black

    PSA Olcan 14.5" 300BLK ASR Rifle, Black

    $1,399.99
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  1. Rifles 2064
  2. Pistols 887
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  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.