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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:
    84%
    (15)
    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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  1. Vortex Sparc AR 2 MOA Red Dot & 10 Magpul 30rd PMAGs

    Vortex Sparc AR 2 MOA Red Dot & 10 Magpul 30rd PMAGs

    SAVE $53.00 When you add both!
    Regular Price $192.99 Special Price $139.99
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  2. 2 Pack Of PSA AR-15 Blem "Stealth" Stripped Lower Receivers

    2 Pack Of PSA AR-15 Blem "Stealth" Stripped Lower Receivers

    SAVE $39.99
    Regular Price $139.98 Special Price $99.99
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  3. PSA MOE Lower Build Kit & Vortex Strike Fire II Red Dot Sight

    PSA MOE Lower Build Kit & Vortex Strike Fire II Red Dot Sight

    $189.98
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  4. PSA Magpul MOE Lower Build Kit & 10 Magpul PMAG Gen 2 MOE 5.56x45 30rd Magazines

    PSA Magpul MOE Lower Build Kit & 10 Magpul PMAG Gen 2 MOE 5.56x45 30rd Magazines

    SAVE $23.00 When you add both!
    Regular Price $222.99 Special Price $199.99
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  5. R&D Precision AR45 Bolt Carrier Group

    R&D Precision AR45 Bolt Carrier Group

    Rating:
    84%
    (15)
    Regular Price $149.99 Special Price $29.99
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  6. Griffin Armament MK2 AR-15 Lower Receiver, Terra Brown

    Griffin Armament MK2 AR-15 Lower Receiver, Terra Brown

    Regular Price $219.95 Special Price $208.95
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  7. BLEM PSA PA-15 5.56 AR-15 Rifle 16" Nitride M4 CRBN 13.5" M-LOK

    BLEM PSA PA-15 5.56 AR-15 Rifle 16" Nitride M4 CRBN 13.5" M-LOK

    Rating:
    99%
    (763)
    Regular Price $519.99 Special Price $469.99
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  8. PSA 16" M4 5.56 MOE EPT Rifle With Rear MBUS & PSA Complete 5.56 Railed Upper Bundle

    PSA 16" M4 5.56 MOE EPT Rifle With Rear MBUS & PSA Complete 5.56 Railed Upper Bundle

    SAVE $39.99 When you add both!
    Regular Price $769.98 Special Price $729.99
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  9. Toolcraft Logo'd Carpenter 158 Nitride Full-Auto BCG & PSA AR-15 Charging Handle 7075 T6 Forged Mil-Spec

    Toolcraft Logo'd Carpenter 158 Nitride Full-Auto BCG & PSA AR-15 Charging Handle 7075 T6 Forged Mil-Spec

    SAVE $19.99 When you add both!
    Regular Price $109.98 Special Price $89.99
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  10. PSA AR-15 "Stealth" Stripped Lower Receiver & PSA Dagger Compact Complete Polymer Frame

    PSA AR-15 "Stealth" Stripped Lower Receiver & PSA Dagger Compact Complete Polymer Frame

    SAVE $30.00 When you add both!
    Regular Price $129.98 Special Price $99.98
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  11. PSA Dagger Compact Complete Polymer Frame & PSA AR-15 Lower Safe/Fire

    PSA Dagger Compact Complete Polymer Frame & PSA AR-15 Lower Safe/Fire

    SAVE $15.00 When you add both!
    Regular Price $124.98 Special Price $109.98
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  12. Vortex Strike Eagle 1-8x24 Gen 2 Riflescope w/ AR-BDC3 Reticle & Vortex Sport Cantilever 30mm Ring Mount 2" Offset

    Vortex Strike Eagle 1-8x24 Gen 2 Riflescope w/ AR-BDC3 Reticle & Vortex Sport Cantilever 30mm Ring Mount 2" Offset

    $519.98
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  13. Vortex Strike Eagle 1-6x24 Gen 2 Riflescope with AR-BDC3 Reticle & Vortex Sport Cantilever 30mm Ring Mount, 2" Offset

    Vortex Strike Eagle 1-6x24 Gen 2 Riflescope with AR-BDC3 Reticle & Vortex Sport Cantilever 30mm Ring Mount, 2" Offset

    SAVE $79.99 When you add both!
    Regular Price $299.98 Special Price $219.99
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  14. Colt LE Carbine 5.56x45mm AR-15 Rifle, Black

    Colt M4 Carbine 223 Rem/5.56 NATO Rifle, Black - CR6920

    Rating:
    92%
    (23)
    Regular Price $1,255.99 Special Price $1,130.99
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  15. PSA 7" 5.56 NATO 1/7 Nitride 9" Hex Lightweight M-Lok Freedom Upper With Fluted Flash Can, No BCG & Charging Handle

    PSA 7" 5.56 NATO 1/7 Nitride 9" Hex Lightweight M-Lok Freedom Upper With Fluted Flash Can, No BCG & Charging Handle

    Regular Price $249.99 Special Price $179.99
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  16. PSA 7" Nitride 5.56 1/7 6" Hex Lightweight M-Lok Upper - No BCG & Charging Handle

    PSA 7" Nitride 5.56 1/7 6" Hex Lightweight M-Lok Upper - No BCG & Charging Handle

    Regular Price $249.99 Special Price $149.99
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  17. Amend2 AR-15/M4/M16 5.56x45mm 30rd Magazine w/ Blue Follower

    Amend2 AR-15/M4/M16 5.56x45mm 30rd Magazine w/ Blue Follower

    Rating:
    53%
    (3)
    Regular Price $13.99 Special Price $6.99
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  18. Palmetto State Armory Magpul AR-15 Lower Build Kit in Black

    Palmetto State Armory Magpul MOE Lower Build Kit, Black

    Rating:
    96%
    (2833)
    Regular Price $119.99 Special Price $99.99
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  19. Toolcraft Premium 5.56 Nickel Boron BCG With Carpenter 158 Bolt

    Toolcraft Logo'd Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - 5165449729

    Rating:
    97%
    (1257)
    Regular Price $119.99 Special Price $109.99
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  20. 16" AR 15 Build Kit with MBUS

    PSA AR-15 Rifle Kit 5.56 16" Nitride 1:7 Mid-Lgth 13.5" LTWT M-Lok MOE w/ MBUS Sights

    Rating:
    96%
    (1361)
    Regular Price $499.99 Special Price $449.99
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  21. Vortex Strikefire II 4MOA Red/Green Dot & 10 Magpul Gen2 PMAG 30rd 5.56x45 Magazines

    Vortex Strikefire II 4MOA Red/Green Dot & 10 Magpul Gen2 PMAG 30rd 5.56x45 Magazines

    SAVE $13.09 When you add both!
    Regular Price $212.99 Special Price $199.90
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  22. BLEM PSA AR-15 Stripped Lower Receiver - USA-15

    BLEM PSA AR-15 Stripped Lower Receiver - USA-15

    Regular Price $79.99 Special Price $69.99
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  23. Daniel Defense CNC MK18 Elite .300 AAC Blackout 10.3" AR-Pistol, FDE/ODG

    Daniel Defense CNC MK18 Elite .300 AAC Blackout 10.3" AR-Pistol, FDE/ODG

    Regular Price $2,799.99 Special Price $2,299.99
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  24. ATI Alpha 7.5" 5.56 30rd AR Pistol, Black - ATIGAX5567MLTBNS

    ATI Alpha 7.5" 5.56 30rd AR Pistol, Black - ATIGAX5567MLTBNS

    Regular Price $449.99 Special Price $329.99
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  1. Rifles 2112
  2. Pistols 939
  3. Uppers 1443
  4. Kits 749
  5. Lower Receivers 864
  6. Parts 9332
  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.