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

300 Blackout AR-15 Rifles

.300 Blackout (also known as .300 AAC Blackout or 7.62x35mm) was initially designed for the M4 carbine for use in special operations, but it's become a common caliber for all AR-platform firearms to be chambered in. .300 Blackout rifles and pistols provide better performance than 5.56 NATO in guns with shorter barrels and silencers. Whether you're looking for a firearm for home defense, hunting, or just something to show off at the range, you can find it in the collection at Sportsman's Outdoor Superstore.

RF-15 MILSPEC 300 BLACKOUT 16` BBL BLACK 30 RD MAG

Radical Firearms RF-15 300 Blackout Milspec Rifle with 16 Inch Barrel

  • $685.00 $409.99
In Stock
MCX 300 BLACKOUT RIFLE WITH 5.56 BARREL

Sig Sauer MCX 300 Blackout Semi Automatic Rifle with 5.56mm NATO Barrel

  • $2,175.00 $1,899.99
  • Brand: Sig Sauer
  • Item Number: RMCX-300B-16B-TFSAL-P-CKI
OMNI HYBRID MAXX 300 BLK LIMITED EDITION

American Tactical Omni Hybrid Maxx 300 AAC Blackout Limited Edition with KeyMod Rail

  • $750.00 $499.99
TACTICAL SOLUTIONS 300BLK RIFLE

Tactical Solutions TSAR 300 Blackout Semi-Automatic Rifle with Threaded Barrel and KeyMod Rail

  • $1,199.99
OMNI HYBRID MAXX 300 FDE LIMITED EDITION

American Tactical Omni Hybrid Maxx 300 AAC Blackout Limited Edition Flat Dark Earth (FDE) with Key

  • $770.00 $519.99
OMNI HYBRID 300 BLK W/ ROGERS SUPER STOC

American Tactical Omni Hybrid 300 Blackout Semi-Auto Rifle with Rogers Super Stoc

  • $569.00 $499.99
OMNI HYBRID MAXX 300 FDE LIMITED EDITION

American Tactical Omni Hybrid Maxx 300 Blackout Limited Ed. FDE Cerakote w/ Rogers Super Stoc and

  • $639.95 $479.99
MCX VIRTUS PATROL 300 BLACKOUT FDE

Sig Sauer MCX Virtus Patrol 300 Blackout Semi-Auto Rifle with FDE Finish

  • $2,233.00 $1,899.99
  • Brand: Sig Sauer
  • Item Number: RMCX-300B-16B-TAP-P-FDE
MCX VIRTUS PATROL 300 BLK STEALTH GRAY

Sig Sauer MCX Virtus Patrol 300 Blackout Semi-Automatic Rifle with Stealth Gray Finish

  • $2,233.00 $1,899.99
  • Brand: Sig Sauer
  • Item Number: RMCX-300B-16B-TAP-P
OMNI MAXX 300 BLACKOUT WITH M-LOK

American Tactical Omni Maxx 300 Blackout Semi-Automatic Rifle with M-LOK

  • $399.99
MCX VIRTUS 300 BLACKOUT FDE WITH PSB

Sig Sauer MCX Virtus 300 Blackout Flat Dark Earth (FDE) Pistol with PSB

  • $2,335.00 $1,999.99
WW-15 300 BLACKOUT 16` BBL OPTIC READY

Windham WW-15 SRC 300 Blackout Flat-Top (Optic Ready) Rifle

  • $1,040.00 $799.99
MILSPORT 300 BLK 16 BBL 15 MLOK FOREND 30 RND MAG

American Tactical Milsport 300 Blackout Optics Ready Semi-Automatic Rifle with MLOK Rail

  • $629.95 $499.99
MILSPORT 300 BLK PATRIOT BROWN WITH M-LOK

American Tactical Milsport 300 Blackout Optics Ready Rifle w/ M-LOK Rail and Patriot Brown Finish

  • $629.95 $489.99
OMNI HYBRID MAXX 300 BLACKOUT WITH M-LOK

American Tactical OMNI Hybrid Maxx 300 Blackout AR-15 Rifle with MLOK Rail

  • $479.95 $399.99
WW-15 300 BLACKOUT DIAMONHEAD RAIL

Windham WW-15 300 Blackout Semi-Automatic Rifle with Diamondhead Rail

  • $1,680.00 $859.99
DDM4 V7 300 BLACKOUT CUSTOM RIFLE

Daniel Defense DDM4 V7 300 Blackout Custom Rifle with M-LOK Rail

  • $1,499.99
AR-556 300 BLACKOUT WITH FREE FLOAT HANDGUARD

Ruger AR-556 300 Blackout Semi-Auto Optics-Ready Rifle with Free-Float Handguard

  • $1,039.00 $779.99
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Explore Our Collection of AR-15s for Sale

What sets the AR-15 apart from other semi-auto rifles is its customizability. No matter what you need your weapon for, you can build an AR for it.

Want something for home defense that isn't just a semi-auto handgun? An AR-15 with a compact rifle barrel and a foregrip is perfect. Getting ready for the next hunting season? Get an AR-15 rifle that's optics-ready to attach a scope and has a longer barrel for increased bullet velocity. And if you just want something that looks cool at the range, our AR-15s for sale feature everything from tactical black to patriotic decals.

Explore all of these and more in our massive collection of guns for sale!

Quality AR-15 Rifles, Exceptional Service

Sportsman's Outdoor Superstore has been offering guns for sale online since 2007, with a rich history of gun sales for over 70 years prior. We owe our success to a commitment to our community of fellow gun owners.

We keep our gun store inventory up to date, ensuring you'll never try to place an order we can't fulfill. To make sure you're getting the best value, all of our guns and accessories are competitively priced. Your order also comes with free shipping to the lower 48 states.

Have questions about our tactical AR-15s for sale? Contact us today - we'll get you the help you need.

Frequently Asked Questions

What is an AR-15?

The AR-15 is a highly customizable semi-automatic rifle. It was originally designed by ArmaLite in the 1950s to meet the US military's need for a standard-issue weapon that was lightweight, reliable, and modular. The military counterpart of the AR-15 (known as the M16) was the standard-issue rifle for the US Armed Forces from the late 60s to the early 2000s.

What are AR-15 pistols?

The AR-15 pistol is a modular handgun that uses the same receiver as a full-sized AR-15 rifle. Instead of being chambered for smaller calibers like 9mm rounds, AR-15 pistols are designed to shoot rifle rounds like .223 Remington and 5.56 NATO. You get a compact, maneuverable weapon without compromising on firepower.

Can I order an AR-15 for sale and have it delivered to my house?

No. All purchases on our site must be sent to an FFL dealer first and then picked up from the dealer. Before placing an order, you should contact your local licensed firearms dealer to confirm they can accept your purchased gun. If you don't, it's very likely they will return the package to us.

Explore .300 Blackout Rifles, Pistols, and More

Special ops missions require the best of the best equipment. Neither 5.56 NATO nor 9mm Parabellum provided the performance these sensitive missions needed, which meant a new one needed to be made.

In 2010, production of both .300 Blackout cartridges and firearms began. These rounds provided better subsonic performance than 9mm and better performance in short-barreled firearms with silencers than 5.56 NATO.

While .300 Blackout rifles, pistols, and carbines were quickly adopted by militaries worldwide, they also became incredibly popular in civilian circles. You can find AR-15 rifles and AR-15 pistols chambered in this high-performance caliber. Find the .300 Blackout gun that's right for you at Sportsman's Outdoor Superstore.

Quality Guns at Competitive Prices

Sportsman's Outdoor Superstore is the go-to gun shop for hundreds of firearm owners. The reason is simple: we offer a diverse selection of guns for sale at competitive prices. Whether you're looking for semi-auto rifles or tiny single-shot handguns, you'll find them here in our collection. And since we never list an item for sale that isn't in stock, you'll never have to worry about being stuck waiting for a backordered firearm.

Plus, your order comes with nationwide shipping. If you're in the lower 48 states, your shipping is free!

Have questions about our .300 Blackout rifles and pistols? Reach out to our in-house customer service. We're always here to help.

Frequently Asked Questions

What are .300 Blackout guns good for?

.300 Blackout was made for combat, so it's a fantastic caliber for self-defense weapons. It's especially effective in SBRs and rifle-caliber handguns. However, its size and kinetic energy make it a good caliber for hunting medium-sized game, too.

Does a .300 Blackout cartridge kick hard?

.300 Blackout has much higher recoil than 5.56 NATO, with tests showing it has around 30% more recoil. However, it's intended for SBRs and carbines, weapons of choice for close-quarters combat where recoil doesn't have as detrimental of an effect. The increased recoil is worth the performance improvements.

Can you deliver .300 Blackout rifles or pistols to my home?

We cannot send any firearms to residential addresses. Instead, we can send it to your local FFL dealer. You can pick up your order from them after it arrives.

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