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AR-15 Rifles
Rainier Arms carries high-quality complete AR15 options from the best manufacturers in the country: Aero Precision, Bravo Company Manufacturing, Colt, Daniel Defense, Lewis Machine & Tool, Rainier Arms, Sig Sauer, Seekins Precision, Q LLC, and many more.
These are complete ARs from industry-leading manufacturers, chambered in .223 and 5.56 NATO. Each semi-automatic AR 15 rifle (or carbine, etc.) found on this list is well-built, modular, reliable, and completely customizable.
If you're looking to upgrade your AR-15 rifle, check out our selection of AR 15 parts.
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Sons of Liberty Gun Works M4-89 5.56 AR-15 Rifle - 13.7" (Pinned)5.0 star rating 3 Reviews$1,852.50Out of stock
Discover Our Range of AR 15 Rifles and Alternative Firearms
At Rainier Arms, our AR-15 collection brings together cutting-edge engineering, battlefield reliability, and top-tier innovation. Whether you're looking for a precision shooter, a duty-ready platform, or range-ready workhorse, we have you covered with premium AR-15 rifles for sale. Although bullpup rifles and lever-action firearms are not AR-15s, they are excellent alternatives, especially for those living in areas where laws prohibit the purchase of AR-15s.
Rainier Arms MK12 .223 Wylde Rifle – 18"
Crafted with precision in mind, the MK12 delivers enhanced long-range accuracy thanks to its .223 Wylde chamber and 18” barrel. This rifle is a modern take on a classic precision SPR-style setup, built to exceed expectations.
Sig Sauer TREAD M400 SDI DH3 AR-15 5.56 NATO Rifle – 16"
Designed in collaboration with world champion shooter Daniel Horner, the DH3 model blends speed, balance, and accuracy into a rugged and dependable platform that’s ready for both competition and tactical use.
Battle Arms Development Workhorse Patrol .223 Wylde AR-15 Rifle – 16"
Built for durability and reliability, this rifle is ready to perform in duty or defensive roles. The .223 Wylde chamber provides flexibility with both .223 Rem and 5.56 NATO ammo, while the M-LOK rail offers endless customization.
Next Level Armament Ascend Phoenix AR-15 5.56 NATO Rifle – 16"
A visually striking rifle with performance to match, the Ascend Phoenix is lightweight, responsive, and loaded with premium features. It’s built for shooters who demand precision and flair.
Patriot Ordnance Factory (POF) 415 Edge 5.56 Rifle – 16"
Engineered with POF’s signature E² extraction technology and fully ambidextrous controls, the 415 Edge offers a next-level shooting experience with extreme durability and advanced ergonomics.
Browse the Full AR-15 Rifle Lineup
These are just a few highlights. Explore the full AR-15 collection at Rainier Arms and find the perfect rifle that fits your mission.
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Why Choose Rainier Arms for AR 15 Sale?
At Rainier Arms, we go beyond just selling rifles, we deliver high-performance platforms backed by real-world expertise and an unwavering commitment to quality. Whether you're a first-time buyer or a seasoned shooter, our curated selection of AR-15s is designed to exceed expectations.
What Makes Us Different:
- Trusted industry leader since 2005
- Wide selection of premium AR-15 rifles in stock
- Veteran, law enforcement & enthusiast advisory team
- Only products we’d use ourselves—no compromises
- Fast, secure, and streamlined online ordering
- Real-time tracking & responsive customer support
- Constantly updated with the latest rifles & builds
Explore AR 15 Rifles for Sale at Rainier Arms and gear up with the best in the industry.
Frequently Asked Questions
Are there any AR 15 for sale on Rainier Arms?
Yes, our AR 15 sale section is updated regularly with discounted rifles from top manufacturers. You can find limited-time deals, clearance items, and exclusive Rainier Arms builds—all available while supplies last.
What’s the difference between .223 Wylde, 5.56 NATO, and .223 Rem AR 15 rifles?
- 5.56 NATO rifles can shoot both 5.56 and .223 Rem, but at slightly higher pressures.
- .223 Rem rifles are only safe for .223 Rem ammo.
- .223 Wylde chambers allow for safe use of both types while offering enhanced accuracy, ideal for precision shooters.
Is it legal to buy an AR 15 from Rainier Arms?
Federal laws permit the sale of AR 15 rifles, but state and local laws may vary. It is the buyer’s responsibility to ensure legality in their area. Rainier Arms ships only to verified FFL dealers, and compliance checks are performed prior to shipment.
Can I customize my AR 15 when ordering?
While complete rifles are sold as-is, we offer a huge range of AR 15 sale parts, uppers, lowers, and accessories so you can fully customize your platform. You can either build your own from scratch or upgrade after purchase.
Do I need an FFL to purchase an AR 15?
Yes, all complete firearms, including AR 15s, must be shipped to a Federal Firearms License (FFL) dealer. During checkout, you'll provide your preferred FFL for delivery and transfer. To know more about AR for sale, get in touch with us.
What’s the difference between the AR-15 models listed on Rainier Arms?
We carry a broad range of AR 15 sale, from lightweight patrol rifles to precision long-range builds. Some are designed for competition, others for tactical use, and some for all-purpose shooting. Each product page includes specs and recommended use cases to help you choose
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The AR15 Rifle: Black Rifle Style
• An AR15 rifle is a lightweight, gas-operated, semi-automatic long gun. It is available in rifle, carbine, SBR, AR pistol, or similar forms and is available to the civilian market. Often referred to as America's Rifle (a play on AR) or black rifle, the weapon is one of the most popular rifles in the country. There are millions of these rifles in circulation today.
• The AR15 is not an "assault rifle", which by definion is a select-fire (i.e. capable of burst and/or automatic fire) weapon. Nor does AR stand for Assault Rifle. The AR15, often referred to as a "Modern Sporting Rifle," is a derivative of Eugene Stoner's ArmaLite AR10 and subsequent M16 designs.
• Modern Sporting Rifle is a term used by the National Shooting Sports Foundation (NSSF) to describe modular, semi-auto long guns like the AR15.
• An AR15 lower receiver is considered a firearm by law whether it is a complete AR (i.e. with an upper receiver attached) or not. The upper receiver by itself is not a firearm.
What does AR in AR 15 stand for?
The AR stands for ArmaLite Rifle, not Assault Rifle. ArmaLite was the company that first built what we now recognize as the AR platform. Eugene Stoner, may he sit at the right hand of God, was the chief designer.
What is a complete AR15?
A complete AR15 comprises a completed receiver set (complete upper and lower), i.e., with all appropriate "guts" installed. These two halves (colloquially referred to as just "upper" and "lower") are hinged together immediately forward of the magazine well with a Receiver Pivot Pin. They are secured further back (just forward of the buffer tube) with a Takedown Pin. This may be a weapon built entirely by the manufacturer or one assembled from a rifle kit. It might also be a "Frankengun," with parts pieced together from a variety of manufacturers, e.g. a bolt carrier group from Aero Precision, a stainless barrel from Bravo Company Manufacturing, lower parts from Springfield Armory, etc.
What AR-15 does the military use?
It doesn't. The military uses the M16, M4, and other rifles and carbines. Military rifles are typically select fire.
What caliber is the AR 15?
The AR is a very adaptable and utilitarian platform. Although a "typical" AR15 is chambered in .223 Wylde, .223 Remington, or 5.56 NATO, you can get one in virtually any mass-production caliber, including pistol calibers - that at that point you start to get into weapons categorized as AR-9s (9mm "Pistol Caliber Carbine), AR-10s (7.62x39), and others. There are ARs chambered in everything from .22lr to .50 caliber.
