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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%
    (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 $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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Items 3169-3192 of 16905

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  1. Armaspec SMB Gen 3 Buffer-C Kit, Black - Reliable Buffer System - ARM268-C

    Armaspec SMB Gen 3 Buffer-C Kit, Black - Reliable Buffer System - ARM268-C

    Rating:
    100%
    (1)
    Regular Price $96.99 Special Price $86.99
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  2. Armaspec A5 Spacer 0.75" in Black - High-Quality Spacer for A5 Buffer Tube Systems - ARM154-RFL/A5

    Armaspec A5 Spacer 0.75" in Black - High-Quality Spacer for A5 Buffer Tube Systems - ARM154-RFL/A5

    Regular Price $8.99 Special Price $6.99
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  3. Armaspec Classic Charging Handle, Black - Reliable Charging Handle for Improved Firearm Function - ARM166-BLK

    Armaspec Classic Charging Handle, Black - Reliable Charging Handle for Improved Firearm Function - ARM166-BLK

    Regular Price $71.99 Special Price $63.99
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  4. Armaspec Classic Charging Handle, Black - Reliable Charging Handle for Enhanced Function - ARM165-BLK

    Armaspec Classic Charging Handle, Black - Reliable Charging Handle for Enhanced Function - ARM165-BLK

    Rating:
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    (2)
    Regular Price $60.99 Special Price $53.99
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  5. Armaspec Victory Compact Charging Handle, Black - Efficient and Ergonomic Charging Handle - ARM163-BLK

    Armaspec Victory Compact Charging Handle, Black - Efficient and Ergonomic Charging Handle - ARM163-BLK

    Regular Price $81.99 Special Price $72.99
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  6. Armaspec Firing Pin, Silver - Durable Firing Pin for Consistent Performance - ARM683-SS

    Armaspec Firing Pin, Silver - Durable Firing Pin for Consistent Performance - ARM683-SS

    Rating:
    90%
    (2)
    Regular Price $22.99 Special Price $19.99
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  7. Armaspec Firing Pin, Silver - High-Quality Firing Pin for Reliable Ignition - ARM682-SS

    Armaspec Firing Pin, Silver - High-Quality Firing Pin for Reliable Ignition - ARM682-SS

    Rating:
    100%
    (2)
    Regular Price $18.99 Special Price $15.99
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  8. Armaspec Fixed Stock to Carbine Spacer Black - Reliable Spacer for Converting Fixed Stocks to Carbine Length for Versatile Shooting - ARM154-RFL

    Armaspec Fixed Stock to Carbine Spacer Black - Reliable Spacer for Converting Fixed Stocks to Carbine Length for Versatile Shooting - ARM154-RFL

    Rating:
    100%
    (2)
    Regular Price $8.99 Special Price $6.99
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  9. Amend2 Modular Stock in Carbon Gray - Ergonomic and Modular Stock for Improved Shooting Accuracy and Rifle Customization - A2AMSLOWSCBN

    Amend2 Modular Stock in Carbon Gray - Ergonomic and Modular Stock for Improved Shooting Accuracy and Rifle Customization - A2AMSLOWSCBN

    Regular Price $96.99 Special Price $86.99
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  10. Amend2 Modular Stock in Carbon Gray - Customizable and Lightweight Stock for Enhanced Tactical Performance and Versatility - A2AMSBASECBN

    Amend2 Modular Stock in Carbon Gray - Customizable and Lightweight Stock for Enhanced Tactical Performance and Versatility - A2AMSBASECBN

    Regular Price $80.99 Special Price $71.99
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  11. Amend2 Modular Stock Black - Ergonomic and Adjustable Stock for Improved Shooting Stability and Precision - A2AMSLOWSBLK

    Amend2 Modular Stock Black - Ergonomic and Adjustable Stock for Improved Shooting Stability and Precision - A2AMSLOWSBLK

    Regular Price $81.99 Special Price $72.99
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  12. Amend2 Modular Stock in Black - Customizable and Durable Stock for Enhanced Performance and Tactical Use - A2AMSBASEBLK

    Amend2 Modular Stock in Black - Customizable and Durable Stock for Enhanced Performance and Tactical Use - A2AMSBASEBLK

    Rating:
    100%
    (2)
    Regular Price $64.99 Special Price $57.99
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  13. Strike Industries FSA Single Folding Stock Black - Compact and Reliable Folding Stock for Tactical Mobility - SI-FSA-S-STOCK

    Strike Industries FSA Single Folding Stock Black - Compact and Reliable Folding Stock for Tactical Mobility - SI-FSA-S-STOCK

    Rating:
    92%
    (5)
    Regular Price $177.99 Special Price $159.99
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  14. ATI Outdoors AR-22 Gen 2 Stock Conversion Kit, Black - C.2.10.2210

    ATI Outdoors AR-22 Gen 2 Stock Conversion Kit, Black - C.2.10.2210

    Regular Price $136.99 Special Price $122.99
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  15. ATI Outdoors Tactlite Gen 2 Adjustable Stock Black - For Customizable Shooting Comfort - C.2.10.2212

    ATI Outdoors Tactlite Gen 2 Adjustable Stock Black - For Customizable Shooting Comfort - C.2.10.2212

    Regular Price $36.99 Special Price $32.89
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  16. Amend2 Enhanced Pistol Grip, Black - Ergonomic and Comfortable Pistol Grip - A2PGEBLK

    Amend2 Enhanced Pistol Grip, Black - Ergonomic and Comfortable Pistol Grip - A2PGEBLK

    Rating:
    100%
    (2)
    Regular Price $20.99 Special Price $17.99
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  17. LBE Unlimited Teardrop Forward Assist Assembly, Black - Superior Durability and Performance - ARTDFA

    LBE Unlimited Teardrop Forward Assist Assembly, Black - Superior Durability and Performance - ARTDFA

    Regular Price $18.99 Special Price $16.79
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  18. Bulldog Cases Bungee Tactical Sling, Tan - for Reliable and Adjustable Tactical Gear Carry - BDT829T

    Bulldog Cases Bungee Tactical Sling, Tan - for Reliable and Adjustable Tactical Gear Carry - BDT829T

    Regular Price $24.99 Special Price $18.99
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  19. Bulldog Cases Bungee Tactical Sling, Black - for Secure and Comfortable Carry in Tactical Situations - BDT829B

    Bulldog Cases Bungee Tactical Sling, Black - for Secure and Comfortable Carry in Tactical Situations - BDT829B

    Regular Price $23.99 Special Price $18.99
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  20. Arisaka Indexer M-LOK Hand Stop, Flat Dark Earth - Secure Grip and Control in FDE - IDX-M-FDE

    Arisaka Indexer M-LOK Hand Stop, Flat Dark Earth - Secure Grip and Control in FDE - IDX-M-FDE

    $41.99
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  21. Arisaka M-LOK Finger Stop, Flat Dark Earth - Durable and Ergonomic Finger Stop in FDE - FS-M-FDE

    Arisaka M-LOK Finger Stop, Flat Dark Earth - Durable and Ergonomic Finger Stop in FDE - FS-M-FDE

    $35.99
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  22. Angstadt Arms Hydraulic Buffer Kit, Stainless Steel - Premium Buffer Kit for Enhanced Shooting Experience - AA09HBKHDP

    Angstadt Arms Hydraulic Buffer Kit, Stainless Steel - Premium Buffer Kit for Enhanced Shooting Experience - AA09HBKHDP

    Regular Price $159.99 Special Price $143.99
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  23. Angstadt Arms Hydraulic Buffer Kit, Stainless Steel - Advanced Buffer Kit for Smooth Performance - AA09HBKSDP

    Angstadt Arms Hydraulic Buffer Kit, Stainless Steel - Advanced Buffer Kit for Smooth Performance - AA09HBKSDP

    Regular Price $156.99 Special Price $140.99
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  24. Rise Armament Reliant Pro Trigger - Single-Stage Flat Blade in Black/Flat Dark Earth for Superior Accuracy and Tactical Style - RA-735-F-BC

    Rise Armament Reliant Pro Trigger - Single-Stage Flat Blade in Black/Flat Dark Earth for Superior Accuracy and Tactical Style - RA-735-F-BC

    Regular Price $272.99 Special Price $199.99
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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.