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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

Triggers
.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:
    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:
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    (150)
    Regular Price $199.99 Special Price $119.99
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  1. Lyman Universal Brass Catcher, Black - 1081245

    Lyman Universal Brass Catcher, Black - 1081245

    Rating:
    60%
    (3)
    Regular Price $25.99 Special Price $22.99
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  2. Strike Industries Short Angled Vertical Grip for M-LOK Rails, Flat Dark Earth - SI-AR-CMAG-S-FDE

    Strike Industries Short Angled Vertical Grip for M-LOK Rails, Flat Dark Earth - SI-AR-CMAG-S-FDE

    Rating:
    100%
    (1)
    Regular Price $25.99 Special Price $21.99
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  3. Strike Industries T-Bone Charging Handle for Upper Receivers, Black/OD Green - SI-AR-TBCH-223-BK-OD

    Strike Industries T-Bone Charging Handle for Upper Receivers, Black/OD Green - SI-AR-TBCH-223-BK-OD

    Rating:
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    (4)
    $36.95
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  4. Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED

    Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED

    $35.95
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  5. Strike Industries T-Bone Charging Handle for AR-15/M4/M16 Upper Receivers - SI-AR-TBCH-223-BK-RED

    Strike Industries T-Bone Charging Handle for AR-15/M4/M16 Upper Receivers - SI-AR-TBCH-223-BK-RED

    Rating:
    74%
    (7)
    Regular Price $49.99 Special Price $36.99
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  6. Strike Industries Long Angled Vertical Grip for M-LOK Rails, Flat Dark Earth - SI-AR-CMAG-L-FDE

    Strike Industries Long Angled Vertical Grip for M-LOK Rails, Flat Dark Earth - SI-AR-CMAG-L-FDE

    Regular Price $25.99 Special Price $21.99
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  7. Warne Scope Mounts Skyline Precision 20 MOA Cantilever Mount 35mm Tube Picatinny Rail - 784220MOA

    Warne Scope Mounts Skyline Precision 20 MOA Cantilever Mount 35mm Tube Picatinny Rail - 784220MOA

    Regular Price $325.99 Special Price $294.99
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  8. Warne Scope Mounts Skyline Precision Cantilever Mount 30mm Tube Picatinny Rail - 7818M

    Warne Scope Mounts Skyline Precision Cantilever Mount 30mm Tube Picatinny Rail - 7818M

    Regular Price $308.99 Special Price $279.99
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  9. Warne Scope Mounts Skyline Precision Cantilever Mount 35mm Tube Picatinny Rail - 7842M

    Warne Scope Mounts Skyline Precision Cantilever Mount 35mm Tube Picatinny Rail - 7842M

    Regular Price $325.99 Special Price $294.99
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  10. Steiner T-Series Cantilever AR Mount 30mm Tube 35mm Picatinny Rail - 5970

    Steiner T-Series Cantilever AR Mount 30mm Tube 35mm Picatinny Rail - 5970

    Regular Price $405.99 Special Price $299.99
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  11. Steiner P-Series Cantilever AR Mount 34mm Tube 36mm Picatinny Rail - 5974

    Steiner P-Series Cantilever AR Mount 34mm Tube 36mm Picatinny Rail - 5974

    Regular Price $156.99 Special Price $140.99
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  12. Steiner T-Series Cantilever AR Mount 30mm Tube 40mm Picatinny Rail - 5971

    Steiner T-Series Cantilever AR Mount 30mm Tube 40mm Picatinny Rail - 5971

    Regular Price $334.99 Special Price $300.99
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  13. Steiner P-Series Cantilever AR Mount 30mm Tube 36mm Picatinny Rail - 5973

    Steiner P-Series Cantilever AR Mount 30mm Tube 36mm Picatinny Rail - 5973

    Regular Price $156.99 Special Price $140.99
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  14. Steiner T-Series 20 MOA Cantilever AR Mount 34mm Tube 40mm Picatinny Rail - 5972

    Steiner T-Series 20 MOA Cantilever AR Mount 34mm Tube 40mm Picatinny Rail - 5972

    Regular Price $334.99 Special Price $300.99
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  15. Smith & Wesson 15rds .40 S&W Magazine, Black - 3007346

    Smith & Wesson 15rds .40 S&W Magazine, Black - 3007346

    Regular Price $49.99 Special Price $44.99
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  16. Smith & Wesson 5rds 5.56 Magazine, Black - 3001439

    Smith & Wesson 5rds 5.56 Magazine, Black - 3001439

    Regular Price $39.99 Special Price $32.69
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  17. Safariland 774 Safari Laminate Single Magazine Pouch, Black - 77421513

    Safariland 774 Safari Laminate Single Magazine Pouch, Black - 77421513

    Regular Price $39.99 Special Price $35.99
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  18. Ruger 10rds 5.56/.223 Remington Magazine, Black - 90659

    Ruger 10rds 5.56/.223 Remington Magazine, Black - 90659

    Regular Price $18.99 Special Price $16.89
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  19. Ruger 10rds 5.56/.223 Remington Magazine, Blue - 90384

    Ruger 10rds 5.56/.223 Remington Magazine, Blue - 90384

    Regular Price $25.99 Special Price $23.19
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  20. Ruger 5rds .450 Bushmaster Magazine, Black - 90679

    Ruger 5rds .450 Bushmaster Magazine, Black - 90679

    Regular Price $42.99 Special Price $37.89
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  21. Ruger 5rds 6.8 SPC Magazine, Black - 90349

    Ruger 5rds 6.8 SPC Magazine, Black - 90349

    Regular Price $25.99 Special Price $22.99
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  22. Ruger 25rds 6.8 SPC Magazine, Black - 90348

    Ruger 25rds 6.8 SPC Magazine, Black - 90348

    Regular Price $41.99 Special Price $37.79
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  23. Ruger 5rds 6.8 SPC Magazine, Blue - 90332

    Ruger 5rds 6.8 SPC Magazine, Blue - 90332

    Regular Price $25.99 Special Price $23.19
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  24. ProMag 65rds 5.56/.223 Remington Magazine, Black - DRMA24

    ProMag 65rds 5.56/.223 Remington Magazine, Black - DRMA24

    Rating:
    80%
    (2)
    Regular Price $101.99 Special Price $91.99
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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.