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Rock River Arms Carbine .350 Legend Completed Upper 350L0328 Caliber: .350 Legend, Overall Length: 24 in, 15% Off w/ Free Shipping

Rock River Arms Completed Upper Receiver, Carbine .350 Legend, 16 Inch Barrel, 1-16 Twist, 1/2-36 Thread, Free-Float Handguard, Brake, Black, 350L0328
Rock River Arms Completed Upper Receiver, Carbine .350 Legend, 16 Inch Barrel, 1-16 Twist, 1/2-36 Thread, Free-Float Handguard, Brake, Black, 350L0328
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Rock River Arms Completed Upper Receiver, Carbine .350 Legend, 16 Inch Barrel, 1-16 Twist, 1/2-36 Thread, Free-Float Handguard, Brake, Black, 350L0328

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Questions & Answers
Customer Reviews
Most Recent Reviews
Put it on a stock Rock River lower! by BIGREDWON, Verified Owner, April 16, 2026
I’m not mad! I’m determined! I’ve had many issues with straight wall rounds in rifles. In AR15 and bolt and levers. This is no exception! Jams on feed! So I was kinda looking for this to happen. It did and I was planning in advance that it would be g...
Read More...
Most Recent Reviews
Rock River Arms Carbine .350 Legend Complete Upper by Kevin Rutkowski, Verified Owner, April 1, 2026
This product arrived as expected , is as described in advertisement, looks good , fit properly and function well. A reasonable price point when compared to similar products. I recommend this upper if you are looking to change calibers on your AR-15 f...
Read More...
Read All 2 Reviews

13% OFF Firearm Parts

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Caliber:
.350 Legend
Overall Length:
24 in
Barrel Length:
16 in
Barrel Profile:
Carbine
Gas System Length:
Carbine Length
Barrel Twist Rate:
1-16
Firearms Threads Per Inch:
1/2x36
Handguard Type:
Free-Float
Muzzle Device:
Brake
Finish:
Anadized
Color:
Black
Handguard Length:
13 in
Barrel Material:
Chrome Moly

Code: 1WN-URC-UP06-350L0328

MPN: 350L0328

UPC: 842834124589

List: $705.00Save 15%
$595.99

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Rock River Arms Carbine .350 Legend Completed Upper

If you're searching for a great price for the Rock River Arms Carbine .350 Legend Completed Upper, then you've found yourself in the right place..image

Established working with some of the most sturdy and long lasting components around, these AR15 Upper Receivers via Rock River Arms will provide you with something that will give you a great deal of reliability.

Rock River Arms has been generating high-quality products for a very long time, and the Rock River Arms Carbine .350 Legend Completed Upper is their particular means of showing you how much they are concerned.

Here at OpticsPlanet, we make it our responsibility to purchase the best product for all of your needs, and showcasing the Rock River Arms Carbine .350 Legend Completed Upper is something that we're delighted to offer.

WARNING: California`s Proposition 65

Specifications for Rock River Arms Carbine .350 Legend Completed Upper:

Manufacturer: Rock River Arms
Caliber: .350 Legend
Overall Length: 24 in
Barrel Length: 16 in
Barrel Profile: Carbine
Gas System Length: Carbine Length
Barrel Twist Rate: 1-16
Firearms Threads Per Inch: 1/2x36
Handguard Type: Free-Float
Muzzle Device: Brake
Finish: Anadized
Color: Black
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 13 in
Gun Rail: Full Top Rail
Weight: 4.47 lb
Barrel Material: Chrome Moly
Bolt Carrier Group Included: COM-SPEC
Magazine Included: Yes
Mount Type: M-LOK

Package Contents:

  • Rock River Arms Carbine .350 Legend Completed Upper
  • Bolt Carrier Group
  • Charging Handle Assembly
  • 10 Round Magazine

Rock River Arms Carbine .350 Legend Completed Upper Orderable Models

List of Orderable Models

  • Rock River Arms Completed Upper Receiver, Carbine .350 Legend, 16 Inch Barrel, 1-16 Twist, 1/2-36 Thread, Free-Float Handguard, Brake, Black, 350L0328 , MPN: 350L0328 , UPC: 842834124589 , Code: 1WN-URC-UP06-350L0328
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Last updated 2026-08-21 UTC.