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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:
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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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Items 2713-2736 of 16451

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  1. Faxon Firearms Match Barrel .22 ARC 20", Black - Superior Precision in Shooting - 15B22A7R20LMQ-5R-NP3

    Faxon Firearms Match Barrel .22 ARC 20", Black - Superior Precision in Shooting - 15B22A7R20LMQ-5R-NP3

    Regular Price $347.99 Special Price $312.99
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  2. Faxon Firearms Match Barrel .22 ARC 16", Black - Competitive Accuracy - 15B22A7R16NGQ-5R-NP3

    Faxon Firearms Match Barrel .22 ARC 16", Black - Competitive Accuracy - 15B22A7R16NGQ-5R-NP3

    Regular Price $250.99 Special Price $225.99
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  3. Faxon Firearms Match Barrel .300 AAC Blackout 7.50", Black - Optimal Performance - 15B35P7NGQ5RNP3

    Faxon Firearms Match Barrel .300 AAC Blackout 7.50", Black - Optimal Performance - 15B35P7NGQ5RNP3

    Regular Price $189.99 Special Price $170.99
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  4. Faxon Firearms Duty Barrel 8.6 Blackout 16", Black - Enhanced Shooting Performance - 10A863C16NGQ

    Faxon Firearms Duty Barrel 8.6 Blackout 16", Black - Enhanced Shooting Performance - 10A863C16NGQ

    $282.99
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  5. Faxon Firearms Duty Barrel 8.6 Blackout 12", Black - Tactical Efficiency - A0A863P12NGQ

    Faxon Firearms Duty Barrel 8.6 Blackout 12", Black - Tactical Efficiency - A0A863P12NGQ

    $275.99
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  6. Faxon Firearms Match Barrel .308 Win 20", Black - Exceptional Accuracy - 10B810R20FHQ-5R-NP3

    Faxon Firearms Match Barrel .308 Win 20", Black - Exceptional Accuracy - 10B810R20FHQ-5R-NP3

    Regular Price $357.99 Special Price $321.99
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  7. Faxon Firearms 3-Screw Low-Profile Gas Block 0.62", Black - Secure Low-Profile Gas Block for Enhanced Performance - GBLP6253

    Faxon Firearms 3-Screw Low-Profile Gas Block 0.62", Black - Secure Low-Profile Gas Block for Enhanced Performance - GBLP6253

    Regular Price $37.99 Special Price $33.99
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  8. Faxon Firearms 3-Screw Low-Profile Gas Block 0.75", Black - Reliable Gas Block for Improved Handling - GBLP7503

    Faxon Firearms 3-Screw Low-Profile Gas Block 0.75", Black - Reliable Gas Block for Improved Handling - GBLP7503

    Regular Price $31.99 Special Price $27.99
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  9. Faxon Firearms Gunner Lightweight Complete Bolt Carrier Group, Black - Lightweight Bolt Carrier Group for Improved Operation - FF556BCGCNITRIDE-LW

    Faxon Firearms Gunner Lightweight Complete Bolt Carrier Group, Black - Lightweight Bolt Carrier Group for Improved Operation - FF556BCGCNITRIDE-LW

    Regular Price $255.99 Special Price $229.99
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  10. Faxon Firearms Bolt Carrier Group, Black - Precision Bolt Carrier Group for Superior Performance - FF556BCGCNITRIDE

    Faxon Firearms Bolt Carrier Group, Black - Precision Bolt Carrier Group for Superior Performance - FF556BCGCNITRIDE

    Regular Price $148.99 Special Price $133.99
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  11. Faxon Firearms Duty Barrel 5.56x45mm 20", Black - Superior Shooting Accuracy - 15A58R20NGQ

    Faxon Firearms Duty Barrel 5.56x45mm 20", Black - Superior Shooting Accuracy - 15A58R20NGQ

    Regular Price $209.99 Special Price $188.99
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  12. Faxon Firearms Duty Barrel 5.56x45mm 18", Black - Optimal Performance and Precision - 15A58R18NGQ

    Faxon Firearms Duty Barrel 5.56x45mm 18", Black - Optimal Performance and Precision - 15A58R18NGQ

    Regular Price $199.99 Special Price $179.99
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  13. Faxon Firearms Duty Barrel 5.56x45mm 16", Black - Precision Engineered for Optimal Shooting Performance - 15A58M16NGQ

    Faxon Firearms Duty Barrel 5.56x45mm 16", Black - Precision Engineered for Optimal Shooting Performance - 15A58M16NGQ

    Regular Price $189.99 Special Price $170.99
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  14. Faxon Firearms Duty Barrel 5.56x45mm 16", Black - Durable and Reliable Upgrade - 15A58M16NPQ

    Faxon Firearms Duty Barrel 5.56x45mm 16", Black - Durable and Reliable Upgrade - 15A58M16NPQ

    Regular Price $189.99 Special Price $170.99
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  15. Faxon Firearms Duty Barrel 5.56x45mm 16", Black - High-Performance and Enhanced Accuracy - 15A58M16NSQ

    Faxon Firearms Duty Barrel 5.56x45mm 16", Black - High-Performance and Enhanced Accuracy - 15A58M16NSQ

    Regular Price $179.99 Special Price $161.99
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  16. CMMG Barrel and Bolt Carrier Group Kit, Black - Durable, High-Performance Kit - 22D5B6E

    CMMG Barrel and Bolt Carrier Group Kit, Black - Durable, High-Performance Kit - 22D5B6E

    Rating:
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    (2)
    Regular Price $311.99 Special Price $280.99
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  17. CMMG Barrel and Collar Kit .22LR 16.10", Black - Perfect for Enhanced Shooting Performance - 22D7C4A

    CMMG Barrel and Collar Kit .22LR 16.10", Black - Perfect for Enhanced Shooting Performance - 22D7C4A

    Regular Price $223.99 Special Price $202.99
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  18. B5 Systems CAR15 Stock OD Green - Durable and Adjustable Stock for CAR15 Rifles with Tactical Functionality - CAR-1482

    B5 Systems CAR15 Stock OD Green - Durable and Adjustable Stock for CAR15 Rifles with Tactical Functionality - CAR-1482

    Rating:
    100%
    (1)
    $59.99
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  19. B5 Systems Type 22 P-Grip, Multicam - Ergonomic and Durable P-Grip in Multicam - PGR-1471

    B5 Systems Type 22 P-Grip, Multicam - Ergonomic and Durable P-Grip in Multicam - PGR-1471

    Regular Price $31.99 Special Price $27.99
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  20. B5 Systems Medium Collapsible Precision Stock Flat Dark Earth - Adjustable Stock for Enhanced Precision and Comfort - CPS-1305

    B5 Systems Medium Collapsible Precision Stock Flat Dark Earth - Adjustable Stock for Enhanced Precision and Comfort - CPS-1305

    Regular Price $249.99 Special Price $225.99
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  21. BCM Ambidextrous MK2 Large Latch Charging Handle, Black - Easy Operation with Superior Control - GFH-MK2-LRG-AMBI

    BCM Ambidextrous MK2 Large Latch Charging Handle, Black - Easy Operation with Superior Control - GFH-MK2-LRG-AMBI

    Rating:
    93%
    (3)
    $89.99
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  22. BCM Ambidextrous MK2 Medium Latch Charging Handle, Black - Reliable, Smooth Operation - GFH-MK2-MED-AMBI

    BCM Ambidextrous MK2 Medium Latch Charging Handle, Black - Reliable, Smooth Operation - GFH-MK2-MED-AMBI

    Rating:
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    (6)
    Regular Price $99.99 Special Price $89.99
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  23. BCM Asymmetric MK2 Large Latch Charging Handle, Black - High-Performance, Durable Charging Handle - GFH-MK2-LRG

    BCM Asymmetric MK2 Large Latch Charging Handle, Black - High-Performance, Durable Charging Handle - GFH-MK2-LRG

    $94.99
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  24. BCM Asymmetric MK2 Medium Latch Charging Handle, Black - Enhanced Functionality and Control - GFH-MK2-MED

    BCM Asymmetric MK2 Medium Latch Charging Handle, Black - Enhanced Functionality and Control - GFH-MK2-MED

    Regular Price $83.99 Special Price $74.99
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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.