FREE SHIPPING On Orders Over $50

Your Gandermountain.com Session is About to Expire!

What Would You Like To Do?

Renew My Session
Log Out
First Cast Event - Big Savings Online & In-Store!

Guns > Centerfire Rifles > Semi-Auto Action >

How To Purchase Guns Online

Semi-Automatic Rifles

  Gander Mountain has a great selection of semi-auto rifles for sale. Choose from .223 Rem./5.56 NATO, .223 Wylde, .308 Win. caliber and more from Century Arms, Bushmaster, Ruger, Colt, American Tactical Imports, and many other top brands.

Sort By:

Items Per Page: 

Results 1 - 32 of 122  Page 1 of 4 arrow-r-blue

DPMS Panther Arms Oracle Centerfire Rifle

DPMS Panther Arms Oracle Centerfire Rifle

Key Features
  • 16" Light Contour Barrel

  • A3 Upper Receiver w/ Picatinny Rail

  • Heat-Dissipating GlacierGuards

  • Collapsible 6-Position Pardus Stock

  • 30-Round Magazine Included

$599.99
$519.99
Colt M4 Carbine OEM-2 Stripped Centerfire Rifle

New! Colt M4 Carbine OEM-2 Stripped Centerfire Rifle

Key Features
  • 16.1" Chrome-Lined Steel Barrel

  • Direct Impingement Gas System

  • Flattop Upper Receiver w/ Picatinny Rail

  • Designed to Accept Free-Floating Handguards

  • Hardguard, Buttstock, Magazine Not Included

$799.99
Daniel Defense DDM4V5 Carbine Centerfire Rifle

New! Daniel Defense DDM4V5 Carbine Centerfire Rifle

Key Features
  • Enhanced, Flared Magazine Well

  • Hammer-Forged, Chrome-Lined Barrel

  • Soft-Touch Vertical Foregrip

  • 6-Position Telescoping Polymer Stock

  • 30-Round Magpul PMag Plastic Case Included

$1,649.99
Israel Weapon Industries Tavor X95 Centerfire Rifle

New! Israel Weapon Industries Tavor X95 Centerfire Rifle

Key Features
  • Convertible Between Three Popular Calibers

  • Close-Quarters Bullpup Design

  • Ambidextrous Operating Controls

  • Tri-Rail Picatinny Forearm

  • Folding Back-Up Sights Included

$1,949.99
CZ-USA Scorpion EVO 3 S1 Carbine Centerfire Rifle

New! CZ-USA Scorpion EVO 3 S1 Carbine Centerfire Rifle

Key Features
  • 16.2" Cold Hammer-Forged Threaded Barrel

  • Removeable Compensating Muzzle Brake

  • Folding Fiber-Reinforced Polymer Stock

  • Ambidextrous Controls w/ Swappable Charging Handle

  • Low-Profile Adjustable Post/Aperture Sights

$999.99
Savage MSR 15 Patrol Centerfire Rifle

New! Savage MSR 15 Patrol Centerfire Rifle

Key Features
  • Fires .223 Rem. 5.56mm NATO Rounds

  • 16-1/8" Melonite-Coated Barrel w/ 5R Rifling

  • Blackhawk Axiom Carbine Stock

  • Blackhawk Knoxx AR Pistol Grip

  • Custom Post/Adjustable Tangent Sights

$799.99
$759.99
ArmaLite AR-10 Tactical Centerfire Rifle

New! ArmaLite AR-10 Tactical Centerfire Rifle

Key Features
  • 15" KeyMod Handguard

  • 18" Black Cerakoted Stainless Barrel

  • Magpul STR Collapsible Stock

  • Magpul MBUS Folding Sights

  • 25-Round Magpul PMag Included

$1,999.99
Ruger AR-556 Centerfire Rifle

Ruger AR-556 Centerfire Rifle

Key Features
  • 7075-T6 Aluminum Upper Lower

  • 16.1" Cold Hammer-Forged Barrel

  • Six-Position Telescopic Stock

  • Adjustable Front Rear Sights

  • 30-Round MagPul PMAG Magazine

$699.99
CMMG Mk4 LE Centerfire Rifle

New! CMMG Mk4 LE Centerfire Rifle

Key Features
  • 416 CrMo Steel M4 Profile Barrel

  • Weapon Armament Surface Protection

  • 6-Position Collapsible Stock

  • F-Marked Post/Adjustable MBUS Sights

  • 30-Round Polymer Magazine Included

$949.99
$929.99
Colt M4 Carbine Centerfire Rifle

Colt M4 Carbine Centerfire Rifle

Key Features
  • Chrome-Lined Barrel

  • Adjustable Front and Rear Sight

  • Matte Black Finish

$999.99
Colt LE6920 MPS-B Centerfire Rifle

Colt LE6920 MPS-B Centerfire Rifle

Key Features
  • 16.1" Chrome-Lined Barrel

  • Magpul MOE SL Handguards

  • Magpul MOE SL Carbine Stock

  • Magpul MOE Pistol Grip/Vertical Grip

  • Magpul Back-Up Sights

$1,099.99
American Tactical Imports Omni Hybrid Maxx SOCOM Centerfire Rifle

New! American Tactical Imports Omni Hybrid Maxx SOCOM Centerfire ...

Key Features
  • Metal-Reinforced Polymer Receiver

  • 16" Chrome-Lined SOCOM Barrel

  • Mission First Tactical Battlelink Buttstock

  • Aero Precision 12" Quantum MLOK Forend

  • 30-Round Polymer Magazine

$699.99
$649.99
Daniel Defense DDM4 V7 Centerfire Rifle

Daniel Defense DDM4 V7 Centerfire Rifle

Key Features
  • 16" Cold Hammer-Forged Barrel

  • Free-Floating MFR XS 15.0 M-LOK Handguard

  • Enhanced, Flared Magazine Well

  • 6-Position Telescoping Stock

  • 1/228 Threaded Muzzle w/ Flash Suppressor

$1,599.99
$1,519.99
Century Arms C308 Sporter Centerfire Rifle

Century Arms C308 Sporter Centerfire Rifle

Key Features
  • Roller-Locked Delayed Blowback System

  • Fluted Chamber for Reliable Cycling

  • Permanently- Mounted Picatinny Rail

  • Durable Polymer Furniture

$699.99
Bushmaster M4A3 Patrolman's Carbine Centerfire Rifle

Bushmaster M4A3 Patrolman's Carbine Centerfire Rifle

Key Features
  • 16" Chrome-Lined Barrel

  • Six-Position Telestock

  • Birdcage Flash Suppressor

  • Adjustable Dual Aperture M16-A2 Rear Sight

  • 30-Round Magazine

$799.99
Bushmaster Quick Response Carbine Centerfire Rifle Package

Bushmaster Quick Response Carbine Centerfire Rifle Package

Key Features
  • 16" Superlight Contour Barrel

  • Teflon-Coated Receiver

  • 6-Position Collapsible Stock

  • Mil-Spec Single Stage Trigger

  • Includes Quick Detach Red-Dot Sight

$699.99
Hi-Point Firearms 4595TS RD Centerfire Rifle Package

Hi-Point Firearms 4595TS RD Centerfire Rifle Package

Key Features
  • Fully-Adjustable Sights

  • Multiple Picatinny Rails

  • Internal Recoil Buffer

  • Last Round Lock Open

  • BSA Red Dot Sight

$349.99
SIG Sauer SIG516 Patrol Centerfire Rifle

SIG Sauer SIG516 Patrol Centerfire Rifle

Key Features
  • 16" Hammer-Forged Barrel

  • Adjustable Four-Position Gas Regulator

  • Free-Floating Quad Rail Forend

  • B5 Systems Bravo SOPMOD Stock

  • Adjustable Back-Up Sights Included

$1,649.99
ArmaLite AR-10 Defensive Sporting Centerfire Rifle

ArmaLite AR-10 Defensive Sporting Centerfire Rifle

Key Features
  • 16" Chrome-Lined Barrel

  • 6-Position Collapsible Stock

  • Picatinny Mounting Rail

  • Birdcage-Style Flash Supressor

  • 20-Round Magpul PMag Included

$999.99
American Tactical Imports Mil-Sport M4 KeyMod Carbine Centerfire Rifle

American Tactical Imports Mil-Sport M4 KeyMod Carbine Centerfire ...

Key Features
  • 10" Free-Floating KeyMod Handguard

  • 16.1" Phosphate-Coated M4-Style Barrel

  • 6-Position Collapsible Rogers Super-Stoc

  • Full-Length Picatinny Top-Rail

  • 30-Round Magazine Included

$699.99
$649.99
Armalite Eagle-15 ORC Centerfire Rifle

Armalite Eagle-15 ORC Centerfire Rifle

Key Features
  • Fires .223 Wylde Rounds Interchangeably

  • Picatinny Railed Receiver Gas Block

  • 6-Position Collapsible Stock

  • Birdcage-Style Flash Supressor

  • 30-Round Magpul PMag Magazine

$599.99
American Tactical Imports Omni Hybrid Maxx Limited Centerfire Rifle

American Tactical Imports Omni Hybrid Maxx Limited Centerfire ...

Key Features
  • Metal-Reinforced Polymer Receiver

  • 16" M4 Profile Phosphate-Coated Barrel

  • 6-Position Collapsible Stock

  • Picatinny Top-Rail Railed Gas Block

  • 30-Round Polymer Magazine

$599.99
$549.99
LWRC International IC-DI Centerfire Rifle

New! LWRC International IC-DI Centerfire Rifle

Key Features
  • Direct Impingement Gas System

  • Cold-Hammer Forged, Spiral Fluted Barrel

  • Modular, One-Piece, Free-Float Rail

  • Magpul MOE Grip Angled Foregrip

  • Fully-Ambidextrous Lower Controls

$1,669.99
Smith Wesson MP15 300 Whisper Centerfire Rifle

Smith & Wesson M&P15 300 Whisper Centerfire Rifle

Key Features
  • Very Effective, Short Range Round

  • Low Recoil and Muzzle Blast

  • Barrel Threaded to 5/8-24

  • A2-Style Flash Suppressor

$1,069.99
Diamondback Firearms DB15CCRFDE Centerfire Rifle

Diamondback Firearms DB15CCRFDE Centerfire Rifle

Key Features
  • 16" Free-Floating Stainless Steel Barrel

  • Forged 7075 Upper Lower Receiver

  • Quad-Rail Diamondback Handguard

  • Rogers 6-Position Adjustable Stock

  • Flat Dark Earth Finish

$649.99
FN 15 DMR Centerfire Rifle

FN 15 DMR Centerfire Rifle

Key Features
  • 18" Match-Grade Cold-Hammer Forged Barrel

  • Midwest Industries SSM M-LOK Handguard

  • Magpul MBUS Pro Backup Iron Sights

  • Magpul STR Buttstock Magpul MOE grip

  • 30-Round Magpul PMAG Magazine

$1,799.99
Springfield M1A SOCOM 16 Centerfire Rifle

Springfield M1A SOCOM 16 Centerfire Rifle

Key Features
  • Tactical Rifle Power in a Small Package

  • Shorter Barrel For Maneuverability

  • Muzzle Brake Greatly Reduces Rise

  • Enlarged Ghost Ring Aperture Rear Sight

  • Scout-Style Picatinny Mount

$1,799.99
Colt AR-15 A4 Lightweight LE Carbine Centerfire Rifle

Colt AR-15 A4 Lightweight LE Carbine Centerfire Rifle

Key Features
  • Direct-Impingement Gas System

  • 16.1" Barrel with 1:7" Twist Ratio

  • Corrosion-Resistant Aluminum Receiver

  • Synthetic Stock and Secure Grips

  • Bayonet Lug and Flash Hider

$929.99
Springfield M1A SOCOM 16 CQB Centerfire Rifle Package

Springfield M1A SOCOM 16 CQB Centerfire Rifle Package

Key Features
  • 5-Position Telescoping Stock

  • Adjustable Cheekpiece

  • M-Lok Rail System

  • XS Tritium Post/Adjustable Ghost Ring Sights

  • Vortex Venom Red Dot Sight Included

$2,299.99
Smith Wesson MP10 Camo Centerfire Rifle

Smith & Wesson M&P10 Camo Centerfire Rifle

Key Features
  • .308 Win.

  • Durable, Corrosion Resistant Finish

  • 5-Round Magazine

$1,729.99
$1,599.99
Daniel Defense M4 Carbine V11 Centerfire Rifle

Daniel Defense M4 Carbine V11 Centerfire Rifle

Key Features
  • Daniel Defense SLiM Rail 15.0

  • 16" Cold Hammer Forged Barrel

  • Mid-Length Gas System

  • Full-Length Picatinny Top-Rail

  • 6-Position Adjustable Stock

$1,549.99
Diamondback DB15CCB Centerfire Rifle

Diamondback DB15CCB Centerfire Rifle

Key Features
  • 16" Free-Floating Chrome-Lined Barrel

  • Forged 7075 Upper Lower Receiver

  • Quad-Rail Diamondback Handguard

  • ATI Strikeforce Stock with Buffer Tube

$579.99

Sort By:

Items Per Page: 

Results 1 - 32 of 122  Page 1 of 4 arrow-r-blue