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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Noveske N4 Infidel CHF 5.56 NATO Complete Upper Receiver Group - 13.7"★ ReviewsPopup content startsclose Popup
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from real shoppers4.8 star rating 30774 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 rating09/19/25AAlexander B.Verified Buyer5.0 star rating09/19/25Should’ve started with this one….Review by Alexander B. on 19 Sep 2025 review stating Should’ve started with this one….This optic is good for someone starting out into mini red dots for handguns, piggy-backs or back ups. The foot print is in all reputable manufacturers products and can be tossed around to any build you wanna slap together and enhance with time.On Trijicon RMR Sight Adjustable - 3.25 MOA Red Dot TYPE 2KKerryVerified Buyer5.0 star rating09/18/25SBR 308Review by Kerry on 18 Sep 2025 review stating SBR 308Absolutely 💯 fantastic, use them on most of my rifles. Very reliable piece of equipment.On JP Enterprises AR10/LR308 Silent Captured Spring Gen 2 For Law Tactical Folder - H2JJames A.Verified Buyer3.0 star rating09/18/25I have to give itReview by James A. on 18 Sep 2025 review stating I have to give itI have to give it a 3 out of 5 stars. The hood of the barrel is showing serious signs of wear as it rubs the inside of the top of the slide. I'm not too concerned about esthetics as I am about function. I regularly compete in IDPA. When I have a stage where I need to shoot fast doubles at a longer distance (say, 15-20 yds) I sometimes get flyers. They (the Charlie's and Delta's) could be me, bug sometimes I know I'm calling my shots and they still fly 🪰 off my POA.On Radian Weapons Afterburner & Ramjet Bronze Barrel Combo for Glock 19JJose N.Verified Buyer5.0 star rating09/18/25A must have upgrade.Review by Jose N. on 18 Sep 2025 review stating A must have upgrade.Amazing feel and quality, outstanding.On Sharps Bros Echelon Improved Grip Module - Black / Brazilian CherryJJoseph S.Verified Buyer5.0 star rating09/17/25Pretty dope. Fits my LeadReview by Joseph S. on 17 Sep 2025 review stating Pretty dope. Fits my LeadPretty dope. Fits my Lead and Steel PB3 pretty good, needed just a little filing on the front to get it to fit, but the PB3 is a little bigger than an ACRO.On ANR Design ANVL UKON2 Aimpoint Acro Optic Mount w/ BUIS$1,567.50Out of stock -
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- Gas Block Diameter .750" Remove This Item
- Caliber 5.56 NATO Remove This Item
- Barrel Length 13.7" Remove This Item
- Mount M-LOK Remove This Item
- Price $1,500.00 - $1,599.99 Remove This Item
- Rail Length 15" Remove This Item
- Twist Rate 1:7 Remove This Item
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