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.„
This year’s TriggrCon delivered yet again, showcasing the latest innovations in the firearms industry and celebrating cutting-edge technology through the prestigious Golden Triggr Awards. With a perfect blend of product expos and live-fire demonstrat...
Sale Runs From August 31st - September 3rd
Labor Day weekend is here, and we’re kicking off the celebration with our most aggressive savings to date! At Rainier Arms, we know this holiday is the perfect time to gear up for your next build or upgrade your cu...
The Rise of the 2011
2021 was an exciting year for handgun enthusiasts, with a host of new trends and innovations hitting the firearms market. One particular standout was the rise of the 2011 handgun, a modernized version of the classic 1911 pistol that broug...
Employee Build of the Week: Crafting the Ultimate FDE MK18-Inspired SBR
Hey All! Ryan Lathrop here from Rainier Arms. I’m excited to share my latest AR-15 build that I just completed. When creating this AR-15 build, I aimed to achieve two primary goals: ens...