Menu
Close
Search
Search Log In Help Center
View Cart
Daily Deals
Clearance
Close
Daily Deals
Clearance
My Account
Help Center

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

shop complete rifles

Uppers

shop ar15 uppers

Lower Receivers

shop ar15 lowers

AR-15 Parts

shop ar-15 parts
Triggers

Triggers
.338 ARC

.338 ARC
Magazines

Magazines
Pistols

Pistols
Kits

Kits
Suppressors

Suppressors
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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
View as Grid View List View

Items 1633-1656 of 16454

Page
Set Descending Direction
  1. Faxon Firearms Mid-Length Button Rifled Gunner Barrel w/Pinned Gas Block 5.56x45mm 16", Black

    Faxon Firearms Mid-Length Button Rifled Gunner Barrel w/Pinned Gas Block 5.56x45mm 16", Black

    Regular Price $240.99 Special Price $216.99
    Add to Wish List Add to Compare
  2. Faxon Firearms Duty Pistol-Length Button Rifled Gov't/Socom Barrel 5.56x45mm 7.50", Black

    Faxon Firearms Duty Pistol-Length Button Rifled Gov't/Socom Barrel 5.56x45mm 7.50", Black

    $138.99
    Add to Wish List Add to Compare
  3. Stern Defense RAB-AD Mini Buttstock Adapter, Black

    Stern Defense RAB-AD Mini Buttstock Adapter, Black

    Regular Price $82.99 Special Price $73.99
    Add to Wish List Add to Compare
  4. Stern Defense RAB-AD Buttstock Adapter Male Assembly, Black

    Stern Defense RAB-AD Buttstock Adapter Male Assembly, Black

    $71.99
    Add to Wish List Add to Compare
  5. Geissele Ultra Duty Mag Release Button, Black

    Geissele Ultra Duty Mag Release Button, Black

    Regular Price $14.99 Special Price $12.99
    Add to Wish List Add to Compare
  6. Geissele Ultra Duty Checkered Takedown Pin Set, Black

    Geissele Ultra Duty Checkered Takedown Pin Set, Black

    Regular Price $29.99 Special Price $26.99
    Add to Wish List Add to Compare
  7. Geissele Premium Mil-Spec Buffer Tube Assembly, Black

    Geissele Premium Mil-Spec Buffer Tube Assembly, Black

    Regular Price $170.99 Special Price $154.99
    Add to Wish List Add to Compare
  8. Geissele Premium Mil-Spec Buffer Tube Assembly, Black

    Geissele Premium Mil-Spec Buffer Tube Assembly, Black

    Regular Price $151.99 Special Price $137.99
    Add to Wish List Add to Compare
  9. WHITE OAK ARMAMENT Extended Length Gas Tube 18.16", Silver

    WHITE OAK ARMAMENT Extended Length Gas Tube 18.16", Silver

    Regular Price $19.99 Special Price $17.69
    Add to Wish List Add to Compare
  10. Geissele HK416 Super Modular M-LOK Picatinny Rail 10.50", Black

    Geissele HK416 Super Modular M-LOK Picatinny Rail 10.50", Black

    Regular Price $520.99 Special Price $472.99
    Add to Wish List Add to Compare
  11. Geissele HK416 MK15 Super Modular M-LOK Picatinny Rail 14.50", Desert Dirt

    Geissele HK416 MK15 Super Modular M-LOK Picatinny Rail 14.50", Desert Dirt

    Regular Price $596.99 Special Price $536.99
    Add to Wish List Add to Compare
  12. Stern Defense Bolt Replacement Kit 9mm Fits Stern Defense SD BU9, Black

    Stern Defense Bolt Replacement Kit 9mm Fits Stern Defense SD BU9, Black

    Regular Price $39.99 Special Price $35.69
    Add to Wish List Add to Compare
  13. Bravo Company Mod 7 Compensator 1/2-28, Black

    Bravo Company Mod 7 Compensator 1/2-28, Black

    $82.99
    Add to Wish List Add to Compare
  14. Bravo Company Mod 6 Compensator 1/2-28, Black

    Bravo Company Mod 6 Compensator 1/2-28, Black

    $77.99
    Add to Wish List Add to Compare
  15. Bravo Company Mod 5 Compensator 1/2-28, Black

    Bravo Company Mod 5 Compensator 1/2-28, Black

    $82.99
    Add to Wish List Add to Compare
  16. Bravo Company Mod 4 Compensator 1/2-28, Black

    Bravo Company Mod 4 Compensator 1/2-28, Black

    $77.99
    Add to Wish List Add to Compare
  17. Bravo Company Mod 3 Compensator 1/2-28, Black

    Bravo Company Mod 3 Compensator 1/2-28, Black

    $82.99
    Add to Wish List Add to Compare
  18. Bravo Company Mod 3 KD Medium Texture Grip, Black

    Bravo Company Mod 3 KD Medium Texture Grip, Black

    $13.99
    Add to Wish List Add to Compare
  19. B5 Systems CPS Cheek Piece, OD Green

    B5 Systems CPS Cheek Piece, OD Green

    Regular Price $22.99 Special Price $19.99
    Add to Wish List Add to Compare
  20. B5 Systems CPS Cheek Piece, Coyote Brown

    B5 Systems CPS Cheek Piece, Coyote Brown

    Regular Price $19.99 Special Price $17.89
    Add to Wish List Add to Compare
  21. B5 Systems CPS Cheek Piece, Black

    B5 Systems CPS Cheek Piece, Black

    Regular Price $22.99 Special Price $19.99
    Add to Wish List Add to Compare
  22. B5 Systems Grip Plug, Wolf Gray

    B5 Systems Grip Plug, Wolf Gray

    Regular Price $12.99 Special Price $10.99
    Add to Wish List Add to Compare
  23. B5 Systems Standard Buttpad, Black

    B5 Systems Standard Buttpad, Black

    Regular Price $12.99 Special Price $11.09
    Add to Wish List Add to Compare
  24. B5 Systems Mid-Length M-LOK Handguard 8.61", Black

    B5 Systems Mid-Length M-LOK Handguard 8.61", Black

    $25.99
    Add to Wish List Add to Compare
View as Grid View List View

Items 1633-1656 of 16454

Page
Set Descending Direction
Shop By
Shopping Options
Category
  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
Brand
Price
Apply
Caliber
Barrel Length
Stock
Deal of the Day
Rebate
Clearance
Preferred Vendor
Coupon Code
Barrel Length

Looking for something more specific?

shop psa products
shop psa aac ammo
shop magpul products
shop glock products
shop sig sauer
shop smith and wesson

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.