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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.

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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%
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    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. Strike Industries AR Picatinny Stock Adapter for ArmaLite Lower Receivers - SI-AR-PSA-BK

    Strike Industries AR Picatinny Stock Adapter for ArmaLite Lower Receivers - SI-AR-PSA-BK

    Rating:
    100%
    (2)
    Regular Price $55.99 Special Price $49.99
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  2. Firefield Rival XL Flashlight and Laser Combo Kit 4.33" 75/150 lm, Green Laser - FF35011K

    Firefield Rival XL Flashlight and Laser Combo Kit 4.33" 75/150 lm, Green Laser - FF35011K

    Regular Price $145.99 Special Price $130.99
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  3. Firefield Rival XL Flashlight and Laser Combo Kit 4.33" 75/150 lm, Red Laser - FF35010K

    Firefield Rival XL Flashlight and Laser Combo Kit 4.33" 75/150 lm, Red Laser - FF35010K

    $59.97
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  4. Sig Clutch-Lok 90 deg Shouldered QD Flash Hider for Sig 5.56mm SLH/SLX - SL-556-12X28-90DEG-F

    Sig Clutch-Lok 90 deg Shouldered QD Flash Hider for Sig 5.56mm SLH/SLX - SL-556-12X28-90DEG-F

    $149.99
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  5. Sig Clutch-Lok 25 deg Tapered QD Muzzle Brake for Sig 5.56mm SLH/SLX - SL-556-12X28-25DEG-M

    Sig Clutch-Lok 25 deg Tapered QD Muzzle Brake for Sig 5.56mm SLH/SLX - SL-556-12X28-25DEG-M

    $149.99
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  6. Talley Medium Sporting Ring 35mm Tube 1.08" Picatinny Rail - TMS35M

    Talley Medium Sporting Ring 35mm Tube 1.08" Picatinny Rail - TMS35M

    Regular Price $72.99 Special Price $64.99
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  7. Talley High Sporting Ring 35mm Tube 1.18" Picatinny Rail - TMS35H

    Talley High Sporting Ring 35mm Tube 1.18" Picatinny Rail - TMS35H

    Regular Price $68.99 Special Price $61.99
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  8. Strike Industries 20 deg Pistol Grip for AR-15/AR-10 Lower Receivers, Black - SI-AR-OMPG-20

    Strike Industries 20 deg Pistol Grip for AR-15/AR-10 Lower Receivers, Black - SI-AR-OMPG-20

    Regular Price $25.99 Special Price $22.99
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  9. Strike Industries 25 deg Pistol Grip for AR-15/AR-10 - Black for Enhanced Ergonomics - SI-AR-OMPG-25

    Strike Industries 25 deg Pistol Grip for AR-15/AR-10 - Black for Enhanced Ergonomics - SI-AR-OMPG-25

    Rating:
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    (1)
    Regular Price $25.99 Special Price $22.99
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  10. Ruger Hybrid Muzzle Brake 1/2"-28 tpi for Ruger American Rifles, Matte Black - 90698

    Ruger Hybrid Muzzle Brake 1/2"-28 tpi for Ruger American Rifles, Matte Black - 90698

    Regular Price $61.99 Special Price $55.99
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  11. HM Defense MonoBloc 9.5" AR-Style Upper Receiver 5.56x45mm/.223 Remington - 95MBUP556

    HM Defense MonoBloc 9.5" AR-Style Upper Receiver 5.56x45mm/.223 Remington - 95MBUP556

    Regular Price $745.99 Special Price $677.99
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  12. Rival Arms Chassis 12 deg Pistol Grip for AR-Style, Black - RA-RA92R101A

    Rival Arms Chassis 12 deg Pistol Grip for AR-Style, Black - RA-RA92R101A

    $89.99
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  13. AR-15 Control NcStar Mid-Length Vertical Grip for 1913 Rails in Sleek Black Finish - VG116

    AR-15 Control NcStar Mid-Length Vertical Grip for 1913 Rails in Sleek Black Finish - VG116

    Regular Price $12.99 Special Price $10.99
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  14. Tacfire 16" Complete Upper Assembly .45 ACP 1:16, Black - BU-45ACP-16

    Tacfire 16" Complete Upper Assembly .45 ACP 1:16, Black - BU-45ACP-16

    Rating:
    68%
    (5)
    Regular Price $322.99 Special Price $292.99
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  15. Tacfire 4" Complete Upper Assembly 9mm 1:10, Black - BU-9MM-4

    Tacfire 4" Complete Upper Assembly 9mm 1:10, Black - BU-9MM-4

    Rating:
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    Regular Price $299.99 Special Price $269.99
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  16. Radian Weapons 14.50" Complete Upper .223 Wylde 1:8, Black - R0024

    Radian Weapons 14.50" Complete Upper .223 Wylde 1:8, Black - R0024

    Regular Price $2,214.99 Special Price $1,994.99
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  17. Radian Weapons 10.5" Complete Upper .223 Wylde 1:8, Black - R0023

    Radian Weapons 10.5" Complete Upper .223 Wylde 1:8, Black - R0023

    Regular Price $2,574.99 Special Price $1,904.99
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  18. Radian Weapons 16" Complete Upper .223 Wylde 1:8, Black - R0025

    Radian Weapons 16" Complete Upper .223 Wylde 1:8, Black - R0025

    $2,029.99
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  19. Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper .300 AAC Blackout 1:7, Black - 1446

    Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper .300 AAC Blackout 1:7, Black - 1446

    $1,192.00
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  20. Patriot Ordnance Factory Minuteman 10.5" Complete Upper 5.56x45mm, Patriot Brown - 1817

    Patriot Ordnance Factory Minuteman 10.5" Complete Upper 5.56x45mm, Patriot Brown - 1817

    Regular Price $1,247.99 Special Price $1,123.99
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  21. Patriot Ordnance Factory P415 Edge 10.5" Complete Upper .300 AAC Blackout, Black - 1515

    Patriot Ordnance Factory P415 Edge 10.5" Complete Upper .300 AAC Blackout, Black - 1515

    $1,359.00
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  22. Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper 5.56x45mm 1:8, Black - 912

    Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper 5.56x45mm 1:8, Black - 912

    Regular Price $1,324.99 Special Price $1,192.99
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  23. Patriot Ordnance Factory Minuteman 16.5" Complete Upper 5.56x45mm 1:8, Black - 1652

    Patriot Ordnance Factory Minuteman 16.5" Complete Upper 5.56x45mm 1:8, Black - 1652

    Regular Price $1,155.99 Special Price $1,040.99
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  24. Patriot Ordnance Factory Minuteman 10.5" Complete Upper 5.56x45mm, Black - 1654

    Patriot Ordnance Factory Minuteman 10.5" Complete Upper 5.56x45mm, Black - 1654

    $1,040.00
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  1. Rifles 2064
  2. Pistols 887
  3. Uppers 1360
  4. Kits 757
  5. Lower Receivers 714
  6. Parts 9222
  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.