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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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AR-15 Parts

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.338 ARC

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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%
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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:
    100%
    (2)
    Regular Price $866.99 Special Price $649.99
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  1. Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Flat Dark Earth - DB1731K061

    Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Flat Dark Earth - DB1731K061

    Regular Price $896.00 Special Price $859.99
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  2. Bootleg Lower 5.56x45mm AR Lower, Black - BPLR1

    Bootleg Lower 5.56x45mm AR Lower, Black - BPLR1

    Regular Price $510.99 Special Price $459.99
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  3. Diamondback 5.56x45mm AR Pistol with 10" Barrel, Black - DB1915K001

    Diamondback 5.56x45mm AR Pistol with 10" Barrel, Black - DB1915K001

    Regular Price $724.99 Special Price $652.99
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  4. Lantac Raven .223 Wylde AR Rifle with 18" Barrel, Black - 01FA3GUNRAVEN

    Lantac Raven .223 Wylde AR Rifle with 18" Barrel, Black - 01FA3GUNRAVEN

    $2,550.99
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  5. FMK AR-1 .223 Remington AR Lower, Blue - FMKGAR1ETB

    FMK AR-1 .223 Remington AR Lower, Blue - FMKGAR1ETB

    Rating:
    90%
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    Regular Price $59.95 Special Price $39.95
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  6. Desert Tech Quattro-15 .223 Remington AR Lower, Black - QTRLR15B53

    Desert Tech Quattro-15 .223 Remington AR Lower, Black - QTRLR15B53

    Regular Price $342.99 Special Price $308.99
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  7. Spikes Tactical .223 Remington AR Rifle with 16" Barrel, White - STR5735CM3FPSTW

    Spikes Tactical .223 Remington AR Rifle with 16" Barrel, White - STR5735CM3FPSTW

    Regular Price $1,084.99 Special Price $976.99
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  8. Colt 7.62x39mm AR Rifle with 16.1" Barrel, Black - CR6762

    Colt 7.62x39mm AR Rifle with 16.1" Barrel, Black - CR6762

    Regular Price $1,215.99 Special Price $1,094.99
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  9. Black Rain Ordnance .223 Remington AR Rifle with 16" Barrel, Black - BROSPEC15A2

    Black Rain Ordnance .223 Remington AR Rifle with 16" Barrel, Black - BROSPEC15A2

    Regular Price $945.99 Special Price $851.99
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  10. San Tan Tactical 6mm ARC AR Rifle with 18" Barrel, Black - STT156ARC

    San Tan Tactical 6mm ARC AR Rifle with 18" Barrel, Black - STT156ARC

    Regular Price $3,187.99 Special Price $2,871.99
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  11. Daniel Defense .223 Remington AR Rifle with 16" Barrel, Cobalt - 212810093047

    Daniel Defense .223 Remington AR Rifle with 16" Barrel, Cobalt - 212810093047

    Regular Price $2,215.00 Special Price $2,060.00
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  12. Battle Arms .223 Remington AR Rifle with 16" Barrel, Black, Gray - AUTHORITY010

    Battle Arms .223 Remington AR Rifle with 16" Barrel, Black, Gray - AUTHORITY010

    Regular Price $1,775.99 Special Price $1,599.99
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  13. Battle Arms .223 Wylde AR Rifle with 16" Barrel, Black - WORKHORSE017CA

    Battle Arms .223 Wylde AR Rifle with 16" Barrel, Black - WORKHORSE017CA

    Regular Price $1,448.99 Special Price $1,250.99
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  14. Radian Weapons Model 1 .223 Wylde AR Rifle with 14.5" Barrel, Black - R0037

    Radian Weapons Model 1 .223 Wylde AR Rifle with 14.5" Barrel, Black - R0037

    Regular Price $3,199.95 Special Price $2,999.95
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  15. Battle Arms .223 Remington AR Rifle with 16" Barrel, Gray - OIP003

    Battle Arms .223 Remington AR Rifle with 16" Barrel, Gray - OIP003

    Regular Price $3,398.99 Special Price $3,061.99
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  16. Black Rain Ordnance .223 Remington AR Rifle with 16" Barrel, Orange, Black - BROPATGADSDEN

    Black Rain Ordnance .223 Remington AR Rifle with 16" Barrel, Orange, Black - BROPATGADSDEN

    Regular Price $1,607.99 Special Price $1,460.99
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  17. Bravo Company MOD 0 .223 Remington AR Rifle with 16" Barrel, Black - 750140

    Bravo Company MOD 0 .223 Remington AR Rifle with 16" Barrel, Black - 750140

    Regular Price $1,828.99 Special Price $1,660.99
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  18. Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Smoked Bronze - DB171AK211

    Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Smoked Bronze - DB171AK211

    Regular Price $671.99 Special Price $604.99
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  19. Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Mil Spec OD Green - DB171AK201

    Diamondback DB15 .223 Remington AR Rifle with 16" Barrel, Mil Spec OD Green - DB171AK201

    Rating:
    80%
    (1)
    Regular Price $671.99 Special Price $604.99
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  20. Diamondback 5.56x45mm AR Pistol with 7" Barrel, Black - DB1912K001

    Diamondback 5.56x45mm AR Pistol with 7" Barrel, Black - DB1912K001

    Rating:
    100%
    (1)
    Regular Price $724.99 Special Price $652.99
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  21. Radian Weapons Model 1 .223 Wylde AR Rifle with 16" Barrel, Brown - R0044

    Radian Weapons Model 1 .223 Wylde AR Rifle with 16" Barrel, Brown - R0044

    Regular Price $3,529.99 Special Price $3,179.99
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  22. Radian Weapons Model 1 .223 Wylde AR Rifle with 14.5" Barrel, Gray - R0038

    Radian Weapons Model 1 .223 Wylde AR Rifle with 14.5" Barrel, Gray - R0038

    Regular Price $3,496.99 Special Price $3,149.99
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  23. San Tan Tactical 6mm ARC AR Rifle with 18" Barrel, Black - STT15 Lite 6ARC

    San Tan Tactical 6mm ARC AR Rifle with 18" Barrel, Black - STT15 Lite 6ARC

    $2,605.50
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  24. Maxim Defense MD15 .223 Remington AR Rifle with 16" Barrel, Black - MXM49737

    Maxim Defense MD15 .223 Remington AR Rifle with 16" Barrel, Black - MXM49737

    Regular Price $1,716.99 Special Price $1,545.99
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  1. Rifles 2103
  2. Pistols 932
  3. Uppers 1433
  4. Kits 747
  5. Lower Receivers 857
  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.