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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Faxon Firearms Match Series Gunner .223 Wylde AR-15 Barrel - 16"★ ReviewsPopup content startsclose Popup
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from real shoppers4.8 star rating 30461 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 rating04/16/25DDAMARIO P.Verified Buyer5.0 star rating04/16/25I received the product inReview by DAMARIO P. on 16 Apr 2025 review stating I received the product inI received the product in a timely fashion and shotgun drum fits and fires great out of both of my ar style shotgunsOn Black River MFG 12 Gauge Shotgun Drum Magazine - 20rdDdale p.Verified Buyer5.0 star rating04/15/25Nice but may not be legal for a braceReview by dale p. on 15 Apr 2025 review stating Nice but may not be legal for a braceSolid and comfortable. No noticeable movement when the brace is extended.
FYI - It does exceed the 13. 5" lop brace requirements when fully extended.
16" total lop when extended.On A3 Tactical HDA3 Hybrid Folding Brace For HK MP5 - BlackMMichael G.Verified Buyer5.0 star rating04/15/25Great complete lowerReview by Michael G. on 15 Apr 2025 review stating Great complete lowerIt’s a nice lower I coupled it with the megara 4” upper from Daniel defense add a flat trigger ambi safety shorter buffer tube a handstop and single point sling. Have yet to hit the range but satisfied with the quality so farOn Andro Corp Industries AC-9 9mm Complete Lower Receiver - No StockAAndrew B.Verified Buyer5.0 star rating04/15/25Kung Fu GripReview by Andrew B. on 15 Apr 2025 review stating Kung Fu GripReally like the Kung Fu grip. I plan on getting the plug for it as well as the Tiger Klaw hand stopOn Die Free Co AR-15/M4 and AR-10/SR-25 Kung Fu GripWWilliam G.Verified Buyer5.0 star rating04/15/25It a great lower receiverReview by William G. on 15 Apr 2025 review stating It a great lower receiverIt a great lower receiverOn Sharps Bros Hellbreaker AR-15 Lower Receiver - Gen 2$216.20Out of stock -
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- Gas Block Diameter .625" Remove This Item
- Thread Pitch 1/2x28 (.22 cal) Remove This Item
- Platform AR-15 Remove This Item
- Caliber .223 Wylde Remove This Item
- Barrel Length 16" Remove This Item
- Price $210.00 - $219.99 Remove This Item
- Twist Rate 1:8 Remove This Item
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