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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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.338 ARC

.338 ARC
Magazines

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Pistols

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Kits

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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%
    (14)
    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 $569.99
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  3. LWRC IC .223 Remington AR Lower, Black - ICL5B
    LWRC IC .223 Remington AR Lower, Black - ICL5B
    Regular Price $866.99 Special Price $649.99
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Items 721-744 of 16867

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  1. Harrington & Richardson BLEM XM607 Carbine Lower Receiver, Gray

    Harrington & Richardson BLEM XM607 Carbine Lower Receiver, Gray

    Rating:
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    (6)
    $139.99
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  2. Harrington & Richardson XM607 Carbine Lower Receiver, Gray

    Harrington & Richardson XM607 Carbine Lower Receiver, Gray

    Rating:
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    (2)
    $159.99
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  3. Harrington & Richardson 601 Slickside Lower Receiver, Gray

    Harrington & Richardson 601 Slickside Lower Receiver, Gray

    Rating:
    90%
    (4)
    $159.99
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  4. PSA "Sabre" Forged 13.7" Mid-Length 5.56 with 13" ODG Quad Rail, JMAC GFHCE P&W, and B5 Sop-Mod Furniture

    PSA "Sabre" Forged 13.7" Mid-Length 5.56 with 13" ODG Quad Rail, JMAC GFHCE P&W, and B5 Sop-Mod Furniture

    Rating:
    96%
    (5)
    $969.99
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  5. Harrington & Richardson BLEM 635 9mm Complete Lower, Gray

    Harrington & Richardson BLEM 635 9mm Complete Lower, Gray

    Rating:
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    $319.99
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  6. Harrington & Richardson 635 9mm Complete Lower, Gray

    Harrington & Richardson 635 9mm Complete Lower, Gray

    Rating:
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    $429.99
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  7. Wilson Combat Protector 5.56x45mm 16", Black - TRPC556BLCA

    Wilson Combat Protector 5.56x45mm 16", Black - TRPC556BLCA

    Regular Price $2,193.99 Special Price $2,193.95
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  8. Wilson Combat Protector .300 AAC Blackout 16", Black - TRPC300BBLCA

    Wilson Combat Protector .300 AAC Blackout 16", Black - TRPC300BBLCA

    Regular Price $2,193.99 Special Price $2,193.95
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  9. Wilson Combat Protector .300 HAMR 16", Black - TRPC300HBLCA

    Wilson Combat Protector .300 HAMR 16", Black - TRPC300HBLCA

    Regular Price $2,029.99 Special Price $2,029.95
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  10. Wilson Combat Recon 5.56x45mm 16", Black - TRRCRCT556168F

    Wilson Combat Recon 5.56x45mm 16", Black - TRRCRCT556168F

    Regular Price $2,859.99 Special Price $2,575.99
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  11. Smith & Wesson Performance Center M&P 15-22 Sport Compliant .22LR 18", Black - 11507

    Smith & Wesson Performance Center M&P 15-22 Sport Compliant .22LR 18", Black - 11507

    Regular Price $897.99 Special Price $808.99
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  12. Rock River Arms LAR-15M Assurance-Ute Carbine .223 Remington/5.56x45mm 16", Black - AR1915

    Rock River Arms LAR-15M Assurance-Ute Carbine .223 Remington/5.56x45mm 16", Black - AR1915

    Regular Price $1,328.99 Special Price $1,207.99
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  13. Rock River Arms LAR-15M X-1 .223 Wylde 18", Black - XAR1751BV1

    Rock River Arms LAR-15M X-1 .223 Wylde 18", Black - XAR1751BV1

    Regular Price $1,423.99 Special Price $1,293.99
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  14. Rock River Arms LAR-15M Assurance-M Carbine 5.56x45mm 16", Black - AR1910

    Rock River Arms LAR-15M Assurance-M Carbine 5.56x45mm 16", Black - AR1910

    Regular Price $1,259.99 Special Price $1,144.99
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  15. Rock River Arms LAR-BT9G R9 Competition 9mm 16", Black - BT91700V1

    Rock River Arms LAR-BT9G R9 Competition 9mm 16", Black - BT91700V1

    Regular Price $1,429.99 Special Price $1,299.99
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  16. Radical Firearms MHR 5.56x45mm 16", Black - FR16556SOC15SHR

    Radical Firearms MHR 5.56x45mm 16", Black - FR16556SOC15SHR

    Regular Price $603.99 Special Price $543.99
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  17. Radian Weapons Model 1 .300 AAC Blackout 9" 30rds, Radian Black Cerakote - R0052

    Radian Weapons Model 1 .300 AAC Blackout 9" 30rds, Radian Black Cerakote - R0052

    Regular Price $3,483.99 Special Price $3,109.99
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  18. 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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  19. 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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  20. Patriot Ordnance Factory Minuteman DI CA Compliant 5.56x45mm 16", Black - 1754

    Patriot Ordnance Factory Minuteman DI CA Compliant 5.56x45mm 16", Black - 1754

    Regular Price $2,095.99 Special Price $1,810.99
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  21. 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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  22. 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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  23. 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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  24. 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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  1. Rifles 2098
  2. Pistols 932
  3. Uppers 1427
  4. Kits 747
  5. Lower Receivers 856
  6. Parts 9311
  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.