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.

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Latest Blog Posts

  • Build of the week! - 25-31 March 2019

    This weeks build is a slight departure from what we normally feature. Nearly all the firearms we have shown on these emails are various personal builds from employees here at Rainier Arms. The rifle we are showcasing today was built specifically for one of our...

    Posted By: rainierblog

    Posted On: March 28, 2019

  • International build of the week | 18-22 March 2019

    This week’s build is a bit different than ones we have shown off before. For a number of years Rainier Arms has been involved with the international sales of firearms and accessories to numerous countries around the globe. This rifle in particular was assemb...

    Posted By: rainierblog

    Posted On: March 25, 2019

  • Levels of training - R.E.A.L. Training

    The phrase that makes me shutter and shake the most is, “Oh… I’m good with my gun.  I go to the range.” I hear this so much when I invite people out to the facility to improve their skills as a CCW Civilian.  In fact… I’m serious when I say that ...

    Posted By: Edward Earle

    Posted On: January 24, 2019

  • Maxim Defense Releases NEW Products at SHOT SHOW 2019

    St Cloud, MN - Maxim Defense, the premier manufacturer in PDW-stocks, braces and accessories is announcing the release of significant new products at SHOT Show 2019. Maxim Defense is located in Booths #1857 - Downstairs and 30010 - Upstairs. "We're excited to...

    Posted By: rainierblog

    Posted On: January 22, 2019