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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

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.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:
    98%
    (150)
    Regular Price $199.99 Special Price $119.99
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  1. Bowden Tactical Handguard 13", Old Glory - Patriotic, High-Performance Handguard - J23013-AF

    Bowden Tactical Handguard 13", Old Glory - Patriotic, High-Performance Handguard - J23013-AF

    Rating:
    80%
    (1)
    $181.99
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  2. Sons of Liberty Gun Works L89 M-LOK Rail 10.75", Black - Durable Rail for Enhanced Customization - L89-10.75

    Sons of Liberty Gun Works L89 M-LOK Rail 10.75", Black - Durable Rail for Enhanced Customization - L89-10.75

    Regular Price $432.99 Special Price $389.99
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  3. Strike Industries Picatinny Bi-Pod Grip, Titan - Durable Bi-Pod Grip for Enhanced Stability and Precision Shooting - SI-AR-AL-BIPOD-TITAN

    Strike Industries Picatinny Bi-Pod Grip, Titan - Durable Bi-Pod Grip for Enhanced Stability and Precision Shooting - SI-AR-AL-BIPOD-TITAN

    Regular Price $74.99 Special Price $66.99
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  4. Strike Industries Universal 3-Lug Quick Detach Base Set in Black/Silver - Versatile and Durable Detach Base for Rapid Changes - SI-BS-OPPRESSOR-U-BASE

    Strike Industries Universal 3-Lug Quick Detach Base Set in Black/Silver - Versatile and Durable Detach Base for Rapid Changes - SI-BS-OPPRESSOR-U-BASE

    Rating:
    100%
    (1)
    $32.99
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  5. Sons of Liberty Gun Works M89 Free-Float Drive Lock M-LOK Rail 11.50", Black - Extended Free-Float Rail for Accuracy - M89-11.5

    Sons of Liberty Gun Works M89 Free-Float Drive Lock M-LOK Rail 11.50", Black - Extended Free-Float Rail for Accuracy - M89-11.5

    Regular Price $340.99 Special Price $308.99
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  6. Sons of Liberty Gun Works M89H M-LOK Rail 13" Fits Knight's Armament SR25, Black - High-Performance Handguard Upgrade - M89H-13

    Sons of Liberty Gun Works M89H M-LOK Rail 13" Fits Knight's Armament SR25, Black - High-Performance Handguard Upgrade - M89H-13

    Regular Price $422.99 Special Price $380.99
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  7. Sons of Liberty Gun Works L89 M-LOK Rail 13.75", Black - Long Rail for Versatile Applications - L89-13.75

    Sons of Liberty Gun Works L89 M-LOK Rail 13.75", Black - Long Rail for Versatile Applications - L89-13.75

    Regular Price $443.99 Special Price $399.99
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  8. SB Tactical SBA3 5-Position Adjustable Pistol Stabilizing Brace Stealth Gray - For Improved Pistol Stability and Ergonomics - SBA3X03MSB

    SB Tactical SBA3 5-Position Adjustable Pistol Stabilizing Brace Stealth Gray - For Improved Pistol Stability and Ergonomics - SBA3X03MSB

    Rating:
    40%
    (1)
    Regular Price $112.99 Special Price $100.99
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  9. Sons of Liberty Gun Works M89H M-LOK Rail 15" Fits Knight's Armament SR25, Black - Precision Rail Fits Enhanced Accuracy and Control - M89H-15

    Sons of Liberty Gun Works M89H M-LOK Rail 15" Fits Knight's Armament SR25, Black - Precision Rail Fits Enhanced Accuracy and Control - M89H-15

    Regular Price $439.99 Special Price $399.99
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  10. Sons of Liberty Gun Works M89H M-LOK Rail 11.50" Fits Knight's Armament SR25, Black - Versatile and Durable - M89H-11.5

    Sons of Liberty Gun Works M89H M-LOK Rail 11.50" Fits Knight's Armament SR25, Black - Versatile and Durable - M89H-11.5

    Regular Price $420.99 Special Price $380.99
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  11. Sons of Liberty Gun Works Presscheck Barricade Stop, Moss Green - Tactical Stop for Improved Field Performance and Stability - BARRICADE-MOSS

    Sons of Liberty Gun Works Presscheck Barricade Stop, Moss Green - Tactical Stop for Improved Field Performance and Stability - BARRICADE-MOSS

    Regular Price $79.99 Special Price $71.99
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  12. Boyt Max-Ops Webbing Adjustable Sling, Coyote Brown - Reliable and Adjustable - PAS-30005

    Boyt Max-Ops Webbing Adjustable Sling, Coyote Brown - Reliable and Adjustable - PAS-30005

    Regular Price $15.99 Special Price $13.79
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  13. Outdoor Connection Express Paracord Sling 46" - Coyote Brown - Durable and Versatile Sling with Classic Coyote - XP-90408

    Outdoor Connection Express Paracord Sling 46" - Coyote Brown - Durable and Versatile Sling with Classic Coyote - XP-90408

    Regular Price $24.99 Special Price $21.79
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  14. Outdoor Connection Super Grip Sling - Coyote Brown - Durable Sling with Superior Grip - SGSS-90405

    Outdoor Connection Super Grip Sling - Coyote Brown - Durable Sling with Superior Grip - SGSS-90405

    Regular Price $23.99 Special Price $20.99
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  15. Allen Kling Sling 20", Veil Avade Camo - Compact and Reliable Rifle Sling for Stealth - Durable and Adjustable - 8548

    Allen Kling Sling 20", Veil Avade Camo - Compact and Reliable Rifle Sling for Stealth - Durable and Adjustable - 8548

    Regular Price $24.99 Special Price $21.99
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  16. Allen Durango 2-Point Sling 36", Gray/Khaki - Durable and Adjustable Rifle Sling for Comfortable and Secure Carry - 8546

    Allen Durango 2-Point Sling 36", Gray/Khaki - Durable and Adjustable Rifle Sling for Comfortable and Secure Carry - 8546

    Regular Price $11.99 Special Price $10.69
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  17. Allen Durango 2-Point Sling 20", Black/Gray - Durable and Comfortable - 8545

    Allen Durango 2-Point Sling 20", Black/Gray - Durable and Comfortable - 8545

    Rating:
    40%
    (1)
    Regular Price $11.99 Special Price $10.69
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  18. Allen Vertex Hyper Tough Sling 36", Veil Terrain Camo - Rugged and Adjustable Rifle Sling - 8540

    Allen Vertex Hyper Tough Sling 36", Veil Terrain Camo - Rugged and Adjustable Rifle Sling - 8540

    Regular Price $23.99 Special Price $21.09
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  19. Allen Vertex Hyper Tough Sling 36", Black/Gray - Ultra-Durable and Adjustable Rifle Sling for Secure Carry - 8541

    Allen Vertex Hyper Tough Sling 36", Black/Gray - Ultra-Durable and Adjustable Rifle Sling for Secure Carry - 8541

    Regular Price $19.99 Special Price $17.69
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  20. Allen Trak Traction Web Sling 36", Veil Terrain Camo - High-Traction and Adjustable Rifle Sling - 8538

    Allen Trak Traction Web Sling 36", Veil Terrain Camo - High-Traction and Adjustable Rifle Sling - 8538

    Regular Price $22.99 Special Price $20.29
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  21. Odin Works Prizm Picatinny Bi-Pod Adapter 2.60", Black - Adapt and Enhance with Picatinny Compatibility - BPPRIZMPICBLK

    Odin Works Prizm Picatinny Bi-Pod Adapter 2.60", Black - Adapt and Enhance with Picatinny Compatibility - BPPRIZMPICBLK

    $474.99
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  22. Rise Armament Extended Charging Handle Latch, Silver - Durable and Reliable - RA212GISLVR

    Rise Armament Extended Charging Handle Latch, Silver - Durable and Reliable - RA212GISLVR

    Regular Price $19.99 Special Price $15.99
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  23. CMC Triggers Gold Finger Single-Stage Curved Drop-In Trigger - for Enhanced Precision, Performance and Custom Style - 91501GF

    CMC Triggers Gold Finger Single-Stage Curved Drop-In Trigger - for Enhanced Precision, Performance and Custom Style - 91501GF

    $242.99
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  24. Angstadt Arms Enhanced Mil-Spec PCC Trigger in Silver - Precision Upgrades for Performance, Accuracy, and Reliability - AAEMILPCCT

    Angstadt Arms Enhanced Mil-Spec PCC Trigger in Silver - Precision Upgrades for Performance, Accuracy, and Reliability - AAEMILPCCT

    Regular Price $67.99 Special Price $60.69
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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 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.