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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:
    88%
    (10)
    Regular Price $149.99 Special Price $49.99
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  1. Patriot Ordnance Factory P-415 Edge CA Compliant 5.56x45mm 16" AR Rifle, Black - 1148

    Patriot Ordnance Factory P-415 Edge CA Compliant 5.56x45mm 16" AR Rifle, Black - 1148

    Regular Price $2,337.99 Special Price $2,123.99
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  2. Patriot Ordnance Factory Renegade + CA Compliant 5.56x45mm 16", Black - 1165

    Patriot Ordnance Factory Renegade + CA Compliant 5.56x45mm 16", Black - 1165

    Regular Price $2,190.99 Special Price $1,990.99
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  3. Patriot Ordnance Factory Renegade+ .300 AAC Blackout 10.50" 30rds, Burnt Bronze - 1797

    Patriot Ordnance Factory Renegade+ .300 AAC Blackout 10.50" 30rds, Burnt Bronze - 1797

    Regular Price $2,353.99 Special Price $2,119.99
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  4. Patriot Ordnance Factory Renegade+ .300 AAC Blackout 10.50" 30rds, Black Anodized - 1796

    Patriot Ordnance Factory Renegade+ .300 AAC Blackout 10.50" 30rds, Black Anodized - 1796

    Regular Price $2,191.99 Special Price $1,990.99
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  5. Patriot Ordnance Factory Minuteman 5.56x45mm 10.50" 30rds, Patriot Brown - 1803

    Patriot Ordnance Factory Minuteman 5.56x45mm 10.50" 30rds, Patriot Brown - 1803

    Regular Price $2,017.99 Special Price $1,743.99
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  6. Patriot Ordnance Factory Renegade+ 5.56x45mm 10.50" 30rds, Burnt Bronze - 1793

    Patriot Ordnance Factory Renegade+ 5.56x45mm 10.50" 30rds, Burnt Bronze - 1793

    Regular Price $2,332.99 Special Price $2,119.99
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  7. Maxim Defense Industries CPS MD9 9mm 5.50" 25rds, Urban Gray Anodized - MXM48174

    Maxim Defense Industries CPS MD9 9mm 5.50" 25rds, Urban Gray Anodized - MXM48174

    Regular Price $1,993.99 Special Price $1,795.99
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  8. Mauser M-15 SD .22LR Semi-Auto, Black - 4150018

    Mauser M-15 SD .22LR Semi-Auto, Black - 4150018

    Regular Price $417.99 Special Price $379.99
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  9. Heckler & Koch 416 .22LR 8.50" 10rds, Flat Dark Earth - 81000531

    Heckler & Koch 416 .22LR 8.50" 10rds, Flat Dark Earth - 81000531

    Regular Price $599.99 Special Price $459.99
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  10. Great Lakes Firearms .223 Wylde 16", Black - GL15223SSCHY

    Great Lakes Firearms .223 Wylde 16", Black - GL15223SSCHY

    Regular Price $711.99 Special Price $640.99
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  11. Great Lakes Firearms .350 Legend 18", Black - GL15350SSBLK16

    Great Lakes Firearms .350 Legend 18", Black - GL15350SSBLK16

    Regular Price $1,078.99 Special Price $979.99
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  12. Great Lakes Firearms .450 Bushmaster 18", Black - GL15450SSBLK

    Great Lakes Firearms .450 Bushmaster 18", Black - GL15450SSBLK

    Regular Price $893.99 Special Price $804.99
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  13. Franklin Armory M4-HTF R3 XTD .350 Legend 16", Black - 0010055BLK

    Franklin Armory M4-HTF R3 XTD .350 Legend 16", Black - 0010055BLK

    Regular Price $1,431.99 Special Price $1,237.99
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  14. Franklin Armory LIBERTAS-L 5.56x45mm 16", Black - 0010026BLK

    Franklin Armory LIBERTAS-L 5.56x45mm 16", Black - 0010026BLK

    Regular Price $1,935.99 Special Price $1,672.99
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  15. Diamondback Firearms DB15 .350 Legend 16", Black - DB1731T001

    Diamondback Firearms DB15 .350 Legend 16", Black - DB1731T001

    Regular Price $1,028.99 Special Price $926.99
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  16. Diamondback Firearms DB15 5.56x45mm 16" AR Rifle, Black - DB1731K001

    Diamondback Firearms DB15 5.56x45mm 16" AR Rifle, Black - DB1731K001

    $845.00
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  17. Diamondback Firearms DB15 5.56x45mm 16" AR Rifle, Black - DB1758K001

    Diamondback Firearms DB15 5.56x45mm 16" AR Rifle, Black - DB1758K001

    Regular Price $1,334.99 Special Price $1,201.99
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  18. Diamondback Firearms DB15 5.56x45mm 7" 30rds, Midnight Bronze - DB1912K071

    Diamondback Firearms DB15 5.56x45mm 7" 30rds, Midnight Bronze - DB1912K071

    Rating:
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    Regular Price $789.99 Special Price $710.99
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  19. Daniel Defense DD4 RIII CA Compliant 5.56x45mm 16", Black - 219103270055

    Daniel Defense DD4 RIII CA Compliant 5.56x45mm 16", Black - 219103270055

    Regular Price $2,635.99 Special Price $2,394.99
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  20. Christensen Arms CA-15 G2 CA Compliant .223 Wylde 16", Black - 8010901701

    Christensen Arms CA-15 G2 CA Compliant .223 Wylde 16", Black - 8010901701

    Regular Price $3,031.99 Special Price $2,619.99
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  21. Christensen Arms CA9MM CO Compliant 9mm 16", Black - 8010901900

    Christensen Arms CA9MM CO Compliant 9mm 16", Black - 8010901900

    $1,649.99
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  22. B&T USA APC223 5.56x45mm 16" Rifle, Black - 361659

    B&T USA APC223 5.56x45mm 16" Rifle, Black - 361659

    Regular Price $5,145.99 Special Price $4,635.99
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  23. PSA PA-15 16"Nitride M4 Carbine 5.56 NATO MOE AR-15 Rifle w/ MBUS Rear, Black

    PSA PA-15 16"Nitride M4 Carbine 5.56 NATO MOE AR-15 Rifle w/ MBUS Rear, Black

    Rating:
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    $549.99
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  24. PSA PA-15 16"Nitride M4 Carbine 5.56 NATO MOE AR-15 Rifle w/ MBUS Rear, ODG

    PSA PA-15 16"Nitride M4 Carbine 5.56 NATO MOE AR-15 Rifle w/ MBUS Rear, ODG

    Rating:
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    (27)
    $549.99
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  1. Rifles 2053
  2. Pistols 874
  3. Uppers 1377
  4. Kits 747
  5. Lower Receivers 774
  6. Parts 9248
  7. Suppressors 167
  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.