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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Ballistic Advantage Premium Series 6mm ARC AR-15 DMR Barrel - 20"★ ReviewsPopup content startsclose Popup
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from real shoppers4.8 star rating 30533 Reviews- Site Reviews
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Thank you for posting a review!We value your input. Share your review so everyone else can enjoy it too.Thank you for posting a review!Your review was sent successfully and is now waiting for our staff to publish it.Verified Reviewer0.0 star rating05/08/25CConner D.Verified Buyer3.0 star rating05/07/25The color and material ofReview by Conner D. on 7 May 2025 review stating The color and material ofThe color and material of the stock is wonderful. But does not fit on my bump stock so I’m going to have to take it off and order a new one.On B5 Systems Bravo StockHHerman C.Verified Buyer5.0 star rating05/07/25SOLGW has an absolute winner!Review by Herman C. on 7 May 2025 review stating SOLGW has an absolute winner!Drivelock is no joke! Very solid lockup and very tight tolerance with milspec upper. Perfect length for a 10. 3" barrel and a Surefire RC2. Came without instructions but fairly intuitive to install.On Sons of Liberty Gun Works M89 Drive Lock AR-15 HandguardTTyler D.Verified Buyer5.0 star rating05/07/25Great magsReview by Tyler D. on 7 May 2025 review stating Great magsLove these mags and for a great priceOn Hera Arms H3T Polymer Magazine - 30 Round Black (10 Pack)CCharlieVerified Reviewer5.0 star rating05/06/25Great barrel!Review by Charlie on 6 May 2025 review stating Great barrel!I'm very pleased with the performance of this barrel. Getting just a little over 0. 5" using factory 77gr ammo.On Rainier Arms Match .223 Wylde MK12 SPR AR-15 Barrel - 18"SStingrayDLVerified Reviewer5.0 star rating05/06/25Bcm, the absolute bestReview by StingrayDL on 6 May 2025 review stating Bcm, the absolute bestWhen you own a BCM rifle. You can stop, no need to search any longer.On Bravo Company MFG (BCM) Cosmo AR-15 Lower Receiver Group w/Mod 0 Widebody Stock$261.25Out of stock -
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- Thread Pitch 5/8x24 (.30 cal) Remove This Item
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