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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:
    88%
    (10)
    Regular Price $149.99 Special Price $49.99
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  1. Lantac SF 15 AR Lower, Black - 01RVBSET13SF

    Lantac SF 15 AR Lower, Black - 01RVBSET13SF

    $514.99
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  2. Lantac SF 15 AR Lower, Black - 01RVBSET12SF

    Lantac SF 15 AR Lower, Black - 01RVBSET12SF

    $510.99
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  3. Lantac Raven AR Lower, Black - 01RVBSET6RAVEN

    Lantac Raven AR Lower, Black - 01RVBSET6RAVEN

    $655.99
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  4. Doublestar Stripped Lower .223 Remington AR Lower, Black - DSCL101

    Doublestar Stripped Lower .223 Remington AR Lower, Black - DSCL101

    Rating:
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    Regular Price $106.99 Special Price $95.99
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  5. FMK AR-1 .223 Remington AR Lower, Blue - FMKGAR1ETB

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

    Rating:
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    (3)
    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. 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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  8. Black Rain Ordnance .223 Remington AR Rifle with 16" Barrel, Black - BROTYRANT

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

    Regular Price $1,511.99 Special Price $1,361.99
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  9. San Tan Tactical 6mm ARC AR Rifle with 18" Barrel, Black - STT156ARC

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

    $2,605.50
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  10. 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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  11. 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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  12. 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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  13. Bravo Company .223 Remington AR Rifle with 16" Barrel, Black - BCM750750LW

    Bravo Company .223 Remington AR Rifle with 16" Barrel, Black - BCM750750LW

    Regular Price $1,828.99 Special Price $1,660.99
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  14. 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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  15. Maxim Defense MD15 .223 Remington AR Rifle with 16" Barrel, Gray - MXM49734

    Maxim Defense MD15 .223 Remington AR Rifle with 16" Barrel, Gray - MXM49734

    Regular Price $1,638.99 Special Price $1,475.99
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  16. 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 $1,609.99 Special Price $1,449.99
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  17. Maxim Defense MD15 .223 Remington AR Rifle with 16" Barrel, Flat Dark Earth - MXM49735

    Maxim Defense MD15 .223 Remington AR Rifle with 16" Barrel, Flat Dark Earth - MXM49735

    Regular Price $1,959.99 Special Price $1,449.99
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  18. Bravo Company BCM .223 Remington AR Lower, Flat Dark Earth - LRGSTKMOD0SPMDFDE

    Bravo Company BCM .223 Remington AR Lower, Flat Dark Earth - LRGSTKMOD0SPMDFDE

    Regular Price $579.99 Special Price $525.99
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  19. Spikes Tactical 9mm Colt Style w/Spider Logo AR Lower, Black - STLS910

    Spikes Tactical 9mm Colt Style w/Spider Logo AR Lower, Black - STLS910

    Rating:
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    $161.10
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  20. Q LLC Sugar Weasel .223 Remington AR Rifle with 16" Barrel, Flat Dark Earth - SW55616INRIFLE

    Q LLC Sugar Weasel .223 Remington AR Rifle with 16" Barrel, Flat Dark Earth - SW55616INRIFLE

    Rating:
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    $2,000.00
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  21. Radian Weapons Model 1 .223 Wylde AR Rifle with 14.5" Barrel, OD Green - R0536

    Radian Weapons Model 1 .223 Wylde AR Rifle with 14.5" Barrel, OD Green - R0536

    Regular Price $3,496.99 Special Price $3,149.99
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  22. Radian Weapons Model 1 .223 Wylde AR Rifle with 14.5" Barrel, Flat Dark Earth - R0535

    Radian Weapons Model 1 .223 Wylde AR Rifle with 14.5" Barrel, Flat Dark Earth - R0535

    Regular Price $3,496.99 Special Price $3,149.99
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  23. Daniel Defense .223 Remington AR Rifle with 14.5" CHF Barrel, Black - 219104238047

    Daniel Defense .223 Remington AR Rifle with 14.5" CHF Barrel, Black - 219104238047

    Regular Price $2,657.99 Special Price $2,393.99
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  24. Sharps Bros Livewire Forged .223 Remington AR Lower, Black - SBLR08F

    Sharps Bros Livewire Forged .223 Remington AR Lower, Black - SBLR08F

    Rating:
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    Regular Price $166.99 Special Price $149.99
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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.