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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

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:
    87%
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    Regular Price $149.99 Special Price $29.99
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  2. PSA AR-15 16" Mid-Length 5.56 NATO 1/7 Nitride 13.5" Lightweight M-Lok MOE EPT Rifle w/MBUS Sight Set
    PSA AR-15 16" Mid-Length 5.56 NATO 1/7 Nitride 13.5" Lightweight M-Lok MOE EPT Rifle w/MBUS Sight Set
    Rating:
    98%
    (556)
    Regular Price $599.99 Special Price $579.99
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  3. LWRC IC .223 Remington AR Lower, Black - ICL5B
    LWRC IC .223 Remington AR Lower, Black - ICL5B
    Rating:
    93%
    (3)
    Regular Price $866.99 Special Price $649.99
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  1. IOSSO Products Upper Receiver Brush w/Handle, Blue Pack of 2

    IOSSO Products Upper Receiver Brush w/Handle, Blue Pack of 2

    Regular Price $15.99 Special Price $13.69
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  2. IOSSO Products .223 Cal 4-Piece Brush Kit, Blue

    IOSSO Products .223 Cal 4-Piece Brush Kit, Blue

    Regular Price $13.99 Special Price $11.99
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  3. Tetra ProSmith .223 Cal/5.56x45mm 19" 1-Piece Premium Gun Cleaning Rod

    Tetra ProSmith .223 Cal/5.56x45mm 19" 1-Piece Premium Gun Cleaning Rod

    Regular Price $22.99 Special Price $20.39
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  4. Breakthrough Clean 5.88" x 2.88" x 0.47" Pivot Lock, Green

    Breakthrough Clean 5.88" x 2.88" x 0.47" Pivot Lock, Green

    Regular Price $10.99 Special Price $9.99
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  5. KleenBore Premium Super .22 Cal/6.5mm #8-32 26" Cleaning Rod

    KleenBore Premium Super .22 Cal/6.5mm #8-32 26" Cleaning Rod

    Regular Price $32.99 Special Price $29.99
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  6. Breakthrough Clean 1" x 3.88" x 12.88" Bore Guide w/Pivot Lock, Green

    Breakthrough Clean 1" x 3.88" x 12.88" Bore Guide w/Pivot Lock, Green

    Rating:
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    Regular Price $26.99 Special Price $23.99
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  7. Breakthrough Clean 1.20" x 4.88" x 10.88" Lower Block w/Pivot Lock, Black/Green

    Breakthrough Clean 1.20" x 4.88" x 10.88" Lower Block w/Pivot Lock, Black/Green

    Rating:
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    Regular Price $37.99 Special Price $33.99
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  8. Breakthrough Clean 1.50" x 4.88" x 15.88" Handguard Removal Tool

    Breakthrough Clean 1.50" x 4.88" x 15.88" Handguard Removal Tool

    Regular Price $32.99 Special Price $28.99
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  9. Breakthrough Clean .22 Cal Upper Brush Set w/Chamber Pads

    Breakthrough Clean .22 Cal Upper Brush Set w/Chamber Pads

    Regular Price $19.99 Special Price $17.99
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  10. Breakthrough Clean Badge 5.56x45mm/9mm/12 Gauge Rod and Pull-Through Cleaning Kit w/Molle Pouch

    Breakthrough Clean Badge 5.56x45mm/9mm/12 Gauge Rod and Pull-Through Cleaning Kit w/Molle Pouch

    Regular Price $76.99 Special Price $68.99
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  11. Breakthrough Clean Badge 6.5mm Rod and Pull-Through Cleaning Kit w/Molle Pouch

    Breakthrough Clean Badge 6.5mm Rod and Pull-Through Cleaning Kit w/Molle Pouch

    Regular Price $63.99 Special Price $56.99
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  12. Breakthrough Clean Badge 5.56x45mm Rod and Pull-Through Cleaning Kit w/Molle Pouch

    Breakthrough Clean Badge 5.56x45mm Rod and Pull-Through Cleaning Kit w/Molle Pouch

    Regular Price $63.99 Special Price $56.99
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  13. Wheeler Castle Nut Crowfoot Wrench, Black

    Wheeler Castle Nut Crowfoot Wrench, Black

    Rating:
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    Regular Price $20.99 Special Price $18.69
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  14. Wheeler Mil-Spec Barrel Nut Crowfoot Wrench, Black

    Wheeler Mil-Spec Barrel Nut Crowfoot Wrench, Black

    Rating:
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    Regular Price $21.99 Special Price $19.39
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  15. Wheeler 3/4" x 5/8" Muzzle Device and Buffer Tube Crowfoot Wrench, Black

    Wheeler 3/4" x 5/8" Muzzle Device and Buffer Tube Crowfoot Wrench, Black

    Regular Price $19.99 Special Price $17.99
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  16. Wheeler 1-1/8" x 1-1/4" Barrel Nut Crowfoot Wrench, Black

    Wheeler 1-1/8" x 1-1/4" Barrel Nut Crowfoot Wrench, Black

    Rating:
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    Regular Price $19.99 Special Price $17.79
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  17. Wheeler 30mm x 1-5/16" Barrel Nut Crowfoot Wrench, Black

    Wheeler 30mm x 1-5/16" Barrel Nut Crowfoot Wrench, Black

    Rating:
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    Regular Price $20.99 Special Price $18.69
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  18. Birchwood Casey Upper Receiver Vise Block, Gray

    Birchwood Casey Upper Receiver Vise Block, Gray

    Regular Price $38.99 Special Price $34.69
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  19. Birchwood Casey Armorer's Torque Wrench Set, Gray/Red

    Birchwood Casey Armorer's Torque Wrench Set, Gray/Red

    Rating:
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    Regular Price $42.99 Special Price $38.09
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  20. Birchwood Casey 1.20" Lower Receiver Vise Block, Gray

    Birchwood Casey 1.20" Lower Receiver Vise Block, Gray

    Rating:
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    Regular Price $14.99 Special Price $13.19
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  21. Birchwood Casey 5.56x45mm Bench Block, Gray

    Birchwood Casey 5.56x45mm Bench Block, Gray

    Regular Price $27.99 Special Price $24.99
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  22. CMC - Wedge Lock Hand Guard, M-Lok, 16", Black - 51016BLK

    CMC - Wedge Lock Hand Guard, M-Lok, 16", Black - 51016BLK

    $229.99
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  23. CMC - Wedge Lock Hand Guard, M-Lok, 11.5", Black - 51011BLK

    CMC - Wedge Lock Hand Guard, M-Lok, 11.5", Black - 51011BLK

    $216.99
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  24. CMC - Wedge Lock Hand Guard, M-Lok, 10.5", Black - 51010BLK

    CMC - Wedge Lock Hand Guard, M-Lok, 10.5", Black - 51010BLK

    $211.99
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  1. Rifles 2106
  2. Pistols 934
  3. Uppers 1435
  4. Kits 747
  5. Lower Receivers 859
  6. Parts 9328
  7. Suppressors 175
  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.