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The ultimate stop for AR-15 Rifles and AR-15 parts
We are one of the largest online sources for quality AR-10 and AR-15 rifles, parts and accessories. Shop our selection of complete and stripped Uppers and Lowers, find Barrels and Ammo for your firearms, gear yourself up with quality Gear and Apparel. We have it all!
Rainier Arms was started by enthusiasts for enthusiasts. We specialize in high-end AR-15/M16 rifles, parts and accessories. If we won't use it, we won't sell it.
We offer a wide variety of firearms and firearm parts from all your favorite manufacturers. Satisfy your needs from brands such as Glock, SIG, S&W, Primary Arms, Stag Arms, PWS, Rainier Arms and many others. Browse all manufacturers.
Great store for high-end firearms. Very very knowledgeable staff.„
Rainier Arms is my go to dealer for high-end AR15 parts and accessories online. They always have a great selection of parts in stock. Many you can't find anywhere else.„
Great shop with easy order pick up for locals making online purchases.„
Latest Blog Posts
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![Trijicon Demo Day — Trusted Optics, Proven Performance]()
Trijicon Demo Day — Trusted Optics, Proven PerformanceRainier Arms had the honor of hosting David Flemming, former U.S. Marine and current Trijicon Account Manager, for an incredible two-day event across both our locations — Rainier Arms Firearms Academy in Wichita, KS, and Rainier Arms OKC in Oklahoma City...
Posted By: Thomas Phan
Posted On: June 05 2025
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![James's custom-made holsters - Rainier Arms - Auburn, Washington.]()
James's custom-made holsters - Rainier Arms - Auburn, Washington.Custom Holster Making By James Hwang Making holsters can be fun but challenging to do. When I started this journey a couple of years ago, I thought to myself, “How hard could it be?”. I searched on the internet and found simple instructions....
Posted By: James Hwang
Posted On: May 02 2025
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![The Best Jersey Around: Dead Eye Designs]()
The Best Jersey Around: Dead Eye DesignsThe Best Jersey Around: Dead Eye DesignsAt Rainier Arms, we pride ourselves on partnering with some of the best companies around. Our partnership with Dead Eye Designs reflects just that! When it comes to picking the right apparel for competition, you cannot g...
Posted By: Shawn Johnston
Posted On: April 23 2025
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![The Science Behind Recoil Reduction Systems: Do They Really Work?]()
The Science Behind Recoil Reduction Systems: Do They Really Work?Recoil is one of the most critical factors affecting firearm performance, accuracy, and user experience. Whether you are a professional shooter, a self-defense enthusiast, or a competitive marksman, managing recoil is essential to maintaining control and preci...
Posted By: rainierblog
Posted On: April 04 2025
