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 1177-1200 of 16454

Page
Set Descending Direction
  1. Precision Reflex PRI Mini Red-Dot Base 30mm Fits Trijicon RMR

    Precision Reflex PRI Mini Red-Dot Base 30mm Fits Trijicon RMR

    Regular Price $57.99 Special Price $51.79
    Add to Wish List Add to Compare
  2. XS Sights A2 CSAT Mil-Spec Aperture Rear Adjustable, Black

    XS Sights A2 CSAT Mil-Spec Aperture Rear Adjustable, Black

    Regular Price $55.99 Special Price $50.39
    Add to Wish List Add to Compare
  3. LMT Defense Battle Sight Set Rear Flip-Up, Black

    LMT Defense Battle Sight Set Rear Flip-Up, Black

    $231.99
    Add to Wish List Add to Compare
  4. LMT Defense Imperial Buis Sight Set Front/Rear Flip-Up, Black/Black

    LMT Defense Imperial Buis Sight Set Front/Rear Flip-Up, Black/Black

    $297.99
    Add to Wish List Add to Compare
  5. XS Sights Tritium Backup Iron Night Sight Front/Rear Flip-Up, White/White

    XS Sights Tritium Backup Iron Night Sight Front/Rear Flip-Up, White/White

    Rating:
    100%
    (1)
    Regular Price $316.99 Special Price $287.99
    Add to Wish List Add to Compare
  6. Geissele Super Precision Scope Mount 36mm High Fits Zero Compromise Optics ZC420

    Geissele Super Precision Scope Mount 36mm High Fits Zero Compromise Optics ZC420

    Regular Price $478.99 Special Price $434.99
    Add to Wish List Add to Compare
  7. Geissele Super Precision Rifle National Match Scope Mount 30mm High Fits Nightforce Competition SR

    Geissele Super Precision Rifle National Match Scope Mount 30mm High Fits Nightforce Competition SR

    Regular Price $393.99 Special Price $357.99
    Add to Wish List Add to Compare
  8. Geissele Super Precision Scope Mount 30mm High Picatinny

    Geissele Super Precision Scope Mount 30mm High Picatinny

    Regular Price $393.99 Special Price $357.99
    Add to Wish List Add to Compare
  9. Geissele Super Precision Red-Dot Sight Mount Fits Aimpoint T1

    Geissele Super Precision Red-Dot Sight Mount Fits Aimpoint T1

    Regular Price $174.99 Special Price $158.99
    Add to Wish List Add to Compare
  10. Geissele Super Precision Absolute Co-Witness Height Optic Mount Fits Aimpoint CompM5s

    Geissele Super Precision Absolute Co-Witness Height Optic Mount Fits Aimpoint CompM5s

    Regular Price $169.99 Special Price $153.99
    Add to Wish List Add to Compare
  11. Geissele 7-Slot 3-Hole Accessory Rail Aluminum Fits HK SMR

    Geissele 7-Slot 3-Hole Accessory Rail Aluminum Fits HK SMR

    Regular Price $40.99 Special Price $36.99
    Add to Wish List Add to Compare
  12. Samson HK Manual Folding Sight Front, Black

    Samson HK Manual Folding Sight Front, Black

    Regular Price $60.99 Special Price $54.79
    Add to Wish List Add to Compare
  13. Luth-AR A2 Sight Kit Rear

    Luth-AR A2 Sight Kit Rear

    $54.99
    Add to Wish List Add to Compare
  14. Swampfox Optics Freedom Rings II Rifle Scope Ring 30mm Tube 1.60" 7075-T6 Aluminum Alloy Picatinny

    Swampfox Optics Freedom Rings II Rifle Scope Ring 30mm Tube 1.60" 7075-T6 Aluminum Alloy Picatinny

    $57.99
    Add to Wish List Add to Compare
  15. Scalarworks LEAP/10 Lower 1/3 Co-Witness Mount 1.57" Fits Aimpoint CompM5b/CompM5s

    Scalarworks LEAP/10 Lower 1/3 Co-Witness Mount 1.57" Fits Aimpoint CompM5b/CompM5s

    Regular Price $166.99 Special Price $150.99
    Add to Wish List Add to Compare
  16. Scalarworks LEAP/04 Mount 1.93" Fits B&T APC/SPC/Holosun HE508T-GR X2/HS407C X2

    Scalarworks LEAP/04 Mount 1.93" Fits B&T APC/SPC/Holosun HE508T-GR X2/HS407C X2

    $151.99
    Add to Wish List Add to Compare
  17. GG&G Spring Actuated Sight Front Flip-Up

    GG&G Spring Actuated Sight Front Flip-Up

    Regular Price $124.99 Special Price $111.99
    Add to Wish List Add to Compare
  18. Leupold DeltaPoint Pro 45 deg 1-Piece AR Mount Cantilever/Picatinny/Weaver

    Leupold DeltaPoint Pro 45 deg 1-Piece AR Mount Cantilever/Picatinny/Weaver

    Regular Price $65.99 Special Price $58.79
    Add to Wish List Add to Compare
  19. SADLAK A2 Front Sight Post Detent

    SADLAK A2 Front Sight Post Detent

    Regular Price $1.99 Special Price $0.99
    Add to Wish List Add to Compare
  20. Swampfox Optics Freedom Cantilever Scope Mount 34mm

    Swampfox Optics Freedom Cantilever Scope Mount 34mm

    $100.99
    Add to Wish List Add to Compare
  21. Swampfox Optics Freedom Rings Rifle Scope Ring 30mm Tube Low 7075 Aluminum Alloy Picatinny

    Swampfox Optics Freedom Rings Rifle Scope Ring 30mm Tube Low 7075 Aluminum Alloy Picatinny

    $40.99
    Add to Wish List Add to Compare
  22. Sons of Liberty Gun Works Front Sight Detent, Black

    Sons of Liberty Gun Works Front Sight Detent, Black

    Regular Price $4.99 Special Price $3.99
    Add to Wish List Add to Compare
  23. Sons of Liberty Gun Works A2 Sight Post Front, Black

    Sons of Liberty Gun Works A2 Sight Post Front, Black

    Regular Price $5.99 Special Price $4.99
    Add to Wish List Add to Compare
  24. American Defense Mfg AD-RECON 2" Cantilever Scope Mount w/Standard Lever 34mm 1.50" Picatinny, FDE

    American Defense Mfg AD-RECON 2" Cantilever Scope Mount w/Standard Lever 34mm 1.50" Picatinny, FDE

    $227.99
    Add to Wish List Add to Compare
View as Grid View List View

Items 1177-1200 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.