18″ 350 Legend Upper

(4 customer reviews)


Shooting steel case ammunition through our products voids ALL warranties!!!

SKU ASM-15-350-18-001 Category


18″ 350 Legend Upper


Ready to enhance your AR-15 rifle build? The 350 Legend AR upper assembly was built for the 350 Legend, one of the fastest straight-wall cartridges for the AR-15. It’s known for its low recoil, high penetration, and stopping power — perfect for hunting.

This upper assembly comes equipped with the following features:

  • 6061 Billet Upper Receiver
  • 18″ 4150 Chrome Moly Vanadium Barrel
  • 5/8×24 Steel Competition Muzzle Device
  • Free Float Handguard (may vary slightly from picture)
  • Black Nitride BCG
  • Standard Charging Handle

Complete your AR with add-ons and parts from our wide variety of accessories that include mounts, optics, and more.

Durkin Tactical was created by gun enthusiasts, for gun enthusiasts. We’re on a mission to provide our customers with gun build kits, parts, accessories, and more, all that meet the highest quality standards at extremely competitive prices. Whether you’re in the market for a 350 Legend AR upper assembly or a complete rifle build kit, we’ve got your tactical needs covered.

Our wide variety of kits has something for everyone, and each kit contains a carefully curated selection of American-made parts to ensure that you’re getting the very best combination for the price. Order trusted name brands today and take advantage of our available shipping insurance, wholesale discounts, and military, firefighter,nurse, medical provider, and first responder discounts.

Shooting steel case ammunition through our products voids ALL warranties!!!

Additional information

Weight 3.85 lbs

4 reviews for 18″ 350 Legend Upper

  1. Scott Scraper

    Got mine in three days. Very solid, well built product. Haven’t shot it yet but so far I’m very impressed.

  2. Gavin pullen

    Got it in 3 days. Great quality cant beat the price my 13 old son Built Ar-15 Built from the ground up can’t wait to shoot it.


    Great upper!! Fun thumper! No issues whatsoever. Great price and a solid piece. Might just get another…

  4. Chris Tan

    This complete upper arrived within 3 days of ordering. I attached this to my milspec lower and, with an upgraded H2 buffer, my 350 Legend rounds all fed/extracted without issue. Consistently getting 3-4 o’clock ejection pattern. Highly recommended!

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