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AR-15 Rifles & More

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.

Rifles

shop complete rifles

Uppers

shop ar15 uppers

Lower Receivers

shop ar15 lowers

AR-15 Parts

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Triggers

Triggers
.338 ARC

.338 ARC
Magazines

Magazines
Pistols

Pistols
Kits

Kits
Suppressors

Suppressors
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:
    93%
    (8)
    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)
    $23.00
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  3. PSA Complete Stealth Classic Lower, Wild Cat Gray
    PSA Complete Stealth Classic Lower, Wild Cat Gray
    Rating:
    98%
    (127)
    Regular Price $199.99 Special Price $99.99
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  1. JP Enterprises Enhanced Bolt Assembly Completion Group .308 Win, Black

    JP Enterprises Enhanced Bolt Assembly Completion Group .308 Win, Black

    Regular Price $214.99 Special Price $192.99
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  2. JP Enterprises Enhanced Bolt Assembly 6.5 Grendel/6mm ARC, Black

    JP Enterprises Enhanced Bolt Assembly 6.5 Grendel/6mm ARC, Black

    $143.99
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  3. JP Enterprises 3-Piece Alternate Spring Pack

    JP Enterprises 3-Piece Alternate Spring Pack

    Regular Price $27.99 Special Price $24.99
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  4. JP Enterprises 5-Piece Alternate Spring Pack

    JP Enterprises 5-Piece Alternate Spring Pack

    $41.99
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  5. JP Enterprises LMOS Low Mass Bolt Carrier w/Key .223 Remington, Black

    JP Enterprises LMOS Low Mass Bolt Carrier w/Key .223 Remington, Black

    $237.99
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  6. JP Enterprises Tuned and Polished Buffer Spring

    JP Enterprises Tuned and Polished Buffer Spring

    $23.99
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  7. JP Enterprises Tuned and Polished Buffer Spring

    JP Enterprises Tuned and Polished Buffer Spring

    Regular Price $23.99 Special Price $20.99
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  8. JP Enterprises Enhanced Bolt Assembly .223 Remington/5.56x45mm, Black

    JP Enterprises Enhanced Bolt Assembly .223 Remington/5.56x45mm, Black

    $128.99
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  9. JP Enterprises Low Mass Recoil Buffer, Red

    JP Enterprises Low Mass Recoil Buffer, Red

    Regular Price $63.99 Special Price $56.99
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  10. JP Enterprises Enhanced Reliability Spring Kit, Yellow/Red

    JP Enterprises Enhanced Reliability Spring Kit, Yellow/Red

    Rating:
    90%
    (4)
    $12.99
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  11. JP Enterprises A2 Style Gas Block 0.75", Black

    JP Enterprises A2 Style Gas Block 0.75", Black

    $154.99
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  12. JP Enterprises Adjustable/Reversible Selector, Black

    JP Enterprises Adjustable/Reversible Selector, Black

    Regular Price $84.99 Special Price $75.99
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  13. JP Enterprises LMOS Low Mass Bolt Carrier .223 Remington, Black

    JP Enterprises LMOS Low Mass Bolt Carrier .223 Remington, Black

    $238.99
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  14. JP Enterprises FMOS Full Mass Bolt Carrier .223 Remington, Black

    JP Enterprises FMOS Full Mass Bolt Carrier .223 Remington, Black

    $238.99
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  15. JP Enterprises CMP Service Rifle Spring Kit, Silver

    JP Enterprises CMP Service Rifle Spring Kit, Silver

    Regular Price $12.99 Special Price $10.99
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  16. Precision Armament AccuWasher Gen 2 Shim Kit 1/2-28

    Precision Armament AccuWasher Gen 2 Shim Kit 1/2-28

    $19.99
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  17. Magpul Mil-Spec BDA Reliable Arm Brace, Black

    Magpul Mil-Spec BDA Reliable Arm Brace, Black

    Regular Price $53.99 Special Price $48.29
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  18. Area 419 Arcalock M-LOK Dovetail Rail 12", Flat Dark Earth

    Area 419 Arcalock M-LOK Dovetail Rail 12", Flat Dark Earth

    Regular Price $100.99 Special Price $90.99
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  19. Area 419 Arcalock Universal Flat Rail w/M-LOK Hardware 17", Black

    Area 419 Arcalock Universal Flat Rail w/M-LOK Hardware 17", Black

    Regular Price $184.99 Special Price $165.99
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  20. Aero Precision M5 .308 Atlas R-One M-LOK Handguard 15", Clear

    Aero Precision M5 .308 Atlas R-One M-LOK Handguard 15", Clear

    $209.99
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  21. LMT Defense Rifle-Length Heat Shield, Black

    LMT Defense Rifle-Length Heat Shield, Black

    Regular Price $348.99 Special Price $313.99
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  22. LMT Defense Carbine-Length Heat Shield, Black

    LMT Defense Carbine-Length Heat Shield, Black

    $96.99
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  23. LMT Defense Full-Auto Short Bolt Carrier Group 7.62x51mm, Chrome

    LMT Defense Full-Auto Short Bolt Carrier Group 7.62x51mm, Chrome

    $489.99
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  24. LMT Defense .308 Cal Lower Parts Kit w/Trigger Group, Black

    LMT Defense .308 Cal Lower Parts Kit w/Trigger Group, Black

    $273.99
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Items 1705-1728 of 16357

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  1. Rifles 2039
  2. Pistols 858
  3. Uppers 1355
  4. Kits 757
  5. Lower Receivers 709
  6. Parts 9205
  7. Suppressors 153
  8. Left Handed AR-15 7
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Looking for something more specific?

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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.