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 .223 Wylde AR-15 SPR Fluted Barrel - 18"★ ReviewsPopup content startsclose Popup
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from real shoppers4.8 star rating 30664 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 rating07/20/25MMatthew O.Verified Buyer5.0 star rating07/18/25Riflespeed Straight Gas TubeReview by Matthew O. on 18 Jul 2025 review stating Riflespeed Straight Gas TubePerfect fitOn Riflespeed Straight Gas TubePPeterVerified Buyer5.0 star rating07/17/25Exactly what I wantedReview by Peter on 17 Jul 2025 review stating Exactly what I wantedI've waited years to get an optic for my pistol. I knew I wanted something fairly affordable, with a green dot because I have astigmatism, and solar backup. This ticked all the boxes and was the best price I could find, even before they had a sale for Memorial day. I wish I'd bought this years ago, and I'm not looking to add one to my smaller gun.On Holosun HE507C-GR-X2 Green Circle Dot SightAAlexander B.Verified Buyer5.0 star rating07/17/25Best EDC I have ever carriedReview by Alexander B. on 17 Jul 2025 review stating Best EDC I have ever carriedI couldn’t be happier. Best compact I have ever shot.On Staccato 2011 CS DPO X-Series 9mm Pistol - 3.5" Curved Trigger DLC/DLCLLuis O.Verified Buyer5.0 star rating07/17/25Bul Armory Tac Pro GOATReview by Luis O. on 17 Jul 2025 review stating Bul Armory Tac Pro GOATOn par with my XC but at half the cost. Smooth shooter with almost no recoil.On Bul Armory 1911 Tac Pro Optic Ready 9MM Pistol - 4.25" SilverLLance S.Verified Buyer5.0 star rating07/17/25A3 Industries 👌Review by Lance S. on 17 Jul 2025 review stating A3 Industries 👌I literally only bought an IWI Uzi Pro so I could put this part on it. I put M300 flash light on the right side and Hot Button on the left side. A3 Industries makes the coolest stuff.On A3 Industries Angled Foregrip - IWI Uzi Pro w/ M-Lok$256.50Out of stock -
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- Gas Block Diameter .750" Remove This Item
- Platform AR-15 Remove This Item
- Caliber .223 Wylde Remove This Item
- Barrel Profile MK12 SPR Remove This Item
- Price $0.00 - $999.99 Remove This Item
- Twist Rate 1:8 Remove This Item
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