Rifle Parts
Whether you're building a new rifle from scratch or looking to upgrade an existing firearm, our vast selection of rifle parts has everything you are going to need in that journey. At Rainier Arms' selection of rifle parts, you can find a wide variety of products including lower and upper parts, trigger parts, muzzle devices, and many more.
Explore our selection of high-quality parts coming from various leading manufacturers like Strike Industries, Magpul, BCM, and many more.
Also, don't forget to check our specially-made Rainier Arms barrels for your firearms.
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Spinta Precision AR-15 9mm Thermal Barrel - 8” Nitride (Rainier Arms Exclusive)Special Price $100.10 Regular Price $189.99
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Angstadt Arms 16” 9mm Rifle Conversion UDP-9 - BlackSpecial Price $309.92 Regular Price $359.00
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Next Level Armament Horus 9MM Billet Receiver SetSpecial Price $299.92 Regular Price $500.00
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Quarter Circle 10 Complete AR-15 9mm PCC Upper - 7.5"Special Price $667.99 Regular Price $889.95
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Quarter Circle 10 Complete AR-15 9mm PCC Upper - 5.5"Special Price $648.99 Regular Price $864.95