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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Rainier Arms Ultramatch MOD2 .223 Wylde AR-15 Barrel - 18" Polished★ ReviewsPopup content startsclose Popup
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from real shoppers4.8 star rating 30397 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 rating04/04/25NNicholas G.Verified Buyer5.0 star rating04/03/25JL billet lowerReview by Nicholas G. on 3 Apr 2025 review stating JL billet lowerArrived in excellent condition, well made very happy with this lower receiver Thankyou.On JL Billet ECO AR-15 Billet Lower ReceiverRRoger C.Verified Buyer5.0 star rating04/03/25springfield echelon grip modReview by Roger C. on 3 Apr 2025 review stating springfield echelon grip modgreat grip mod, excellent quality, great feel and looks, took about 10 minutes to switch over the cog and mag release. parts fit perfect.On Sharps Bros Echelon Improved Grip Module - Black / Brazilian CherryAAlex B.Verified Buyer5.0 star rating04/03/25Great, slick looking upper at a sale priceReview by Alex B. on 3 Apr 2025 review stating Great, slick looking upper at a sale priceGreat price on a SOLGW Exo 3 upper. Hard to find upper especially on sale like that. The only issue is significant machining marks on very top edge of the rail. But, due to the price being so fair, iam not going to take a star off for it.On Sons of Liberty Gun Works M4-EXO3 5.56 AR-15 Upper - 10.5"DDave R.Verified Buyer5.0 star rating04/03/25Well made device.Review by Dave R. on 3 Apr 2025 review stating Well made device.This drum is very well made, using the best available materials. Sadly, it did not fit into my new VR80 nor my VR60.On Black River MFG 12 Gauge Shotgun Drum Magazine - 20rdMMICHAEL V.Verified Buyer5.0 star rating04/02/25Great gripsReview by MICHAEL V. on 2 Apr 2025 review stating Great gripsLove it. Put it on my DDM4. I put a different Driven arms grip on my rattler. Both are my top gripsOn Driven Arms Co. Utility Compact Grip (ULCG Gen 2) - Atom$400.00 -
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- Gas Block Diameter .750" Remove This Item
- Thread Pitch 1/2x28 (.22 cal) Remove This Item
- Caliber .223 Wylde Remove This Item
- Finish Polished Remove This Item
- Barrel Length 18" Remove This Item
- Price $400.00 - $409.99 Remove This Item
- Manufacturer Rainier Arms, LLC Remove This Item
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