1. Firearms
  3. Semi-Auto Rifles
  5. AR-15 Rifles

AR-15 Rifles

At Sportsman’s Outdoor Superstore, we offer a large selection of AR-15 rifles, including popular favorites from top manufacturers like Colt, Ruger, and Windham Weaponry. Whether you’re looking for an entry-level model as your first rifle, a top rated gas piston variant, or a stripped lower to build your own custom AR, you’ll find dozens of reliable AR-15 rifles to shop from. You can use product filters to narrow your options by different manufacturers and calibers. To get some insight into what other customers are currently buying, you can also shop our most popular AR-15 rifles.

New Addition to AR-15 Rifles

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RADICAL FIREARMS RF-15 6.5 Grendel Rifle with 18-Inch Stainless Steel Barrel

radical firearms
RF-15 6.5 Grendel Rifle with 18-Inch Stainless Steel Barrel

Item Number: FR18-6.5-SS-MED-15RPR
$499.99
Shop AR15 Pistols for Sale
AM-15-STRIPPED LOWER RECEIVER MULTI CAL CLAM PACKAGED

Anderson Manufacturing AR-15 223/5.56 Stripped Lower Receiver (In Clam Package)

  • $36.99 (Save 8%)
  • Bulk price when you buy 5 or more.
  • $40.21
In Stock
COMPLETE OPEN TRIGGER LOWER 5.56MM

Anderson Manufacturing Complete Open Trigger Assembled AR-15 Lower Receiver (Multi Cal)

  • $249.99
In Stock
ACI-15 5.56NATO 16` BRAVO BASE

Andro Corp Industries Bravo16 MLOK 5.56 NATO AR-15 Rfile with 16 Inch Barrel and Black Finish

  • $699.00 $429.99
In Stock
AM-15 5.56MM SEMI-AUTOMATIC RIFLE WITH 13-INCH M-LOK HANDGUARD

Anderson Manufacturing AM-15 5.56mm Utility Rifle with 16 Inch Barrel and M-LOK Handguard

  • $649.00 $419.99
In Stock
MP 15 SPORT II 5.56 16` BBL BLACK

Smith & Wesson M&P-15 Sport II 5.56mm Semi-Automatic Rifle with Additional 10-Round Magazine

  • $849.99 $649.99
In Stock
AM-15 5.56MM SEMI-AUTOMATIC RIFLE WITH 15-INCH M-LOK HANDGUARD

Anderson Manufacturing AM-15 Utility 5.56mm Semi-Automatic Rifle with 15-Inch M-LOK Handguard

  • $649.00 $419.99
In Stock
AR-556 MPR 5.56MM

Ruger AR-556 MPR 5.56mm Semi-Automatic Multi-Purpose Rifle

  • $1,089.00 $879.99
In Stock
DDM4 A1 RIII 5.56 FDE 14.5 IN BBL 12.5 IN RIS III RAIL MAG/SLING

Daniel Defense DDM4 A1 RIII 5.56mm FDE Semi-Auto Rifle with TriggerTech 2-Stage Trigger, RIS III Rail and Armageddon Gear Sling

  • $2,199.99 $2,099.99
In Stock
ACI-15 AR-15 RIFLE 5.56 16 IN BBL FDE CERAKOTE MAGPUL 30 RD

Andro Corp Industries ACI-15 Bravo 5.56mm AR-15 Rifle with FDE Cerakote Finish

  • $599.00 $499.99
In Stock
SFAR 7.62 NATO 20 IN BBL BALCK 20 ROUND MAG

Ruger SFAR 7.62x51mm NATO Small-Frame Autoloading Rifle with 20 Inch Barrel

  • $1,329.00 $999.99
In Stock
  • Brand: Ruger
  • Item Number: 5611
SFAR 7.62 NATO 16 IN BBL BLACK 20 RD MAG

Ruger SFAR 7.62x51mm NATO Small-Frame Autoloading Rifle with 16.1 Inch Barrel

  • $1,329.00 $1,009.99
In Stock
  • Brand: Ruger
  • Item Number: 5610
MP-15 SPORT II 5.56 OPTICS READY

Smith & Wesson M&P15 Sport II 5.56mm Optic Ready Rifle

  • $799.99 $579.99
In Stock
KE-9 COMPLETE LOWER 9MM BLACK

KE Arms KE-9 9mm Complete Lower Receiver

  • $699.99 $399.99
In Stock
  • Brand: KE Arms
  • Item Number: 1-50-01-070
SAINT VICTOR 5.56MM 16 IN BBL BLACK GEAR UP

Springfield Saint Victor Black 5.56mm Gear Up Rifle Package with Extra Mag, Vortex Optic, Sl

  • $1,049.99
In Stock
M400 DH3 223 WYLDE DH3 COMPETITION STOCK

Sig Sauer M400-DH3 5.56mm NATO AR-15 Rifle with DH3 Adjustable Stock

  • $2,179.99 $1,999.99
In Stock
  • Brand: Sig Sauer
  • Item Number: RM400-SDI-16B-DH3
RF-15 MILSPEC 7.62X39 16 BBL BLACK 20 RD MAG

Radical Firearms RF-15 Milspec 7.62x39mm Semi-Auto Rifle with 15-Inch Free Float Rail

  • $685.00 $499.99
In Stock
FN 15 GUARDIAN 5.56 BLACK 16 IN BBL 30 RD MAG

FN FN15 Guardian 5.56mm Semi-Automatic Rifle with 16 Inch Barrel

  • $999.99
In Stock
  • Brand: FN
  • Item Number: 36-100740
AM15 RIFLE 5.56 BLACK 16 IN BBL 15 IN MLOK HANDGUARD

Anderson Manufacturing Frontline 16 5.56mm Rifle with M-Lok Handguard

  • $849.99 $599.99
In Stock
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