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.
-
Ballistic Advantage Hanson 300BLK AR-15 Barrel - 8.3"★ ReviewsPopup content startsclose Popup
These are real reviews
from real shoppers4.8 star rating 30332 Reviews- Site Reviews
- Product Reviews
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 rating03/26/25TTimothy T.Verified Buyer5.0 star rating03/26/25great quality, EXCELLENT PRICE !!!Review by Timothy T. on 26 Mar 2025 review stating great quality, EXCELLENT PRICE !!!Nice fit and finish, nice large ejection port. Finally a quality product at a reasonable price !!!On Icarus Precision AR 9mm Billet Stripped Upper ReceiverDD. C.Verified Reviewer5.0 star rating03/26/25Well worth the price!Review by D. C. on 26 Mar 2025 review stating Well worth the price!I just picked up my switchback yesterday and it worked very well with my Volquartsen ENV-9. It also worked well with my Ruger SR22 pistol. The shortest configuration did not work well with my Volquartsen but the longer version worked perfectly. I will likely buy another one.On Silencerco Switchback 22 2.0 SuppressorRrichard h.Verified Buyer5.0 star rating03/25/25Devil Dog side chargerReview by richard h. on 25 Mar 2025 review stating Devil Dog side chargerWell made, easy to install. It makes charging easy with the optics!On Devil Dog Concepts Hard Charger (HCR) AR-10/LR308 Side Charging Handle - Rear MountJJames M.Verified Buyer5.0 star rating03/25/25SurprisedReview by James M. on 25 Mar 2025 review stating SurprisedI recently qualified at the range. with my Sig P229. The DPM guide rod system preformed better than expected. The recoil did feel reduced, and the cycle rate was increased.
I will be purchasing more for other handguns.On DPM Systems Technologies Mechanical Recoil Reduction System - Sig Sauer P228 & P229KKelly G.Verified Buyer4.0 star rating03/25/2520-round MagsReview by Kelly G. on 25 Mar 2025 review stating 20-round MagsFor those who want them…I’m sure they’re great. For me, they stick out way too far. I returned them and stuck with the 16-round factory mags and simply bought an extension making them 19-rounders. The fit is flush now and that’s what I was after. Oh…Staccato C2, btwOn Staccato 2011 9mm/38 Super Magazine - 140mm/20rd$199.50 -
Shop By
Now Shopping by
Shopping Options
- Gas Block Diameter .750" Remove This Item
- Caliber 300 Blackout Remove This Item
- Finish Quench Polish Quench (QPQ) Remove This Item
- Barrel Length 8.3" Remove This Item
- Gas System Length Pistol Remove This Item
- Price $190.00 - $199.99 Remove This Item
My Wish List