The ultimate stop for AR-15 Rifles and AR-15 parts

We are one of the largest sources for quality AR-10 and AR-15 rifles, parts and accessories online. Shop our selection of complete and stripped Uppers and Lowers, find Barrels and Ammo for your firearms.

Rainier Arms was started by enthusiasts for enthusiasts. We specialize in high end AR15s/M16s, high-end parts & accessories. If we won't use it, we won't sell it.

We offer a variety of firearms and firearm parts from your favorite manufacturers. Fill your needs from brands such as Glock, SIG, S&W, Primary Arms, Stag Arms, PWS, Rainier Arms... 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

  • 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

  • Your AR Deserves this BCG – Lantac® Enhanced Bolt Carrier Group

    The bolt carrier group (BCG) is the beating heart of an AR. Like our own heart, it is not only critical to making things function, but it is also put under significant stress to accomplish that. Sure there are many parts of an AR that are critical, most of the...

    Posted By: Riley M

    Posted On: December 13, 2018

  • The Great Light Hype

    Or Is It?   With the ever-growing segment of custom precision bolt guns the last five or so years, we’ve seen a huge growth in the category of lightweight or “backcountry” rifles. As a hunter that makes the attempt to reach difficult areas away from...

    Posted By: Shaun Cook

    Posted On: November 5, 2018