Rock River Arms Introduces ARs Chambered in .350 Legend

Matthew Moss
by Matthew Moss
Rock River Arms LAR-15M CAR A4 in .350 Legend (Rock River Arms)

Illinois-based Rock River Arms have introduced a pair of new ARs chambered in .350 Legend. The carbines are aimed at the modern hunting rifle market and come with a free floated M-LOK handguard, low profile gas block and a Rock River two-stage trigger.


Here’s what Rock River had to say about the new .350 Legend Rifles:

Rock River Arms, one of the industry’s most respected names in Modern Sporting Rifles and pistols, recently introduced a new .350 Legend carbine. This entry into RRA’s LAR lineup was developed as a modern hunting firearm with minimal recoil and dominant short- to mid-range capabilities.

The RRA LAR-15M CAR A4 350 Legend produces new advantages for modern hunters using straight wall cartridges. Delivering the power and accuracy expected from RRA’s precision rifles and providing reduced recoil, the .350 Legend features a 16-inch chrome moly (also available in stainless-steel) cryo-treated barrel with 1:16 twist and equipped with an RRA military style brake. The RRA two-stage trigger provides a crisp break and is housed in the RRA winter trigger guard, allowing full dexterity while wearing gloves.

The RRA LAR-15M .350 Legend comes standard with a six-position Operator CAR stock, overmolded A2 pistol grip, and 13-inch extended lightweight free-float handguard covering a low-profile gas block and CAR-length gas system. The full-length top rail configuration fits all quality optic systems while the M-LOK compatibility provides for accessory attachments, such as a bipod and light source. A sturdy hard-plastic, ten round magazine, owner’s manual and warranty are included with the rifle.


Find 350 Legend Ammunition

RRA LAR-15M .350 Legend Specifications:

Caliber: .350 Legend
Lower Receiver: Forged RRA LAR-15M Multi-Caliber Marked
Upper Receiver: Forged A4
Barrel: 16-Inch Chrome Moly or Stainless Steel, 1:16 Twist, ½-36 Thread
Muzzle: RRA Military Style Brake
Gas Block: Low-Profile Gas Block
Trigger: RRA Two-Stage / RRA Winter Trigger Guard
Safety: RRA Standard
Handguard: RRA 13-Inch Lightweight Free-Float, M-LOK Compatible
Buttstock: RRA Operator CAR Stock
Pistol Grip: RRA Overmolded A2 Grip
Weight (w/empty magazine): 6.8 lbs.
Length: 33-Inches Retracted
Includes: One 10rd Magazine, RRA Case, Manual, and RRA Limited Lifetime Warranty

MSRP for the CAR A4 LAR-15M with its 16-Inch Chrome Moly barrel is $1100 while the
CAR A4 STAINLESS has an MSRP of $1150.

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Matthew Moss
Matthew Moss

Managing Editor: & Overt Matt is a British historian specialising in small arms development and military history. He has written several books and for a variety of publications in both the US and UK. Matt is also runs The Armourer's Bench, a video series on historically significant small arms. Here on TFB he covers product and current military small arms news. Reach Matt at:

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3 of 17 comments
  • John Shepherd John Shepherd on Feb 25, 2020

    I can see getting a bolt gun caliber upper for an AR if it's cheaper than a good bolt gun and you are on a budget but if you have the money why not just buy a less expensive bolt gun or something like a 6.5 Grendel upper for your AR15 lower?

    • Mazkact Mazkact on Feb 26, 2020

      @John Shepherd Last I checked RRA has dropped 6.5 Grendel and I predict they will drop 350 legend very soon. When the CMP only allowed iron sights in Service rifle matches the RRA A2 National match was real hard to beat for the money but now I just don't see buying RRA especially with the stink that is on them. I will still buy their NM triggers because I have not found one to beat it for my use.

  • Mike Mike on Feb 28, 2020

    This has the potential to grow far beyond its niche as a hunting cartridge for a handful of states with stupid laws. Previous "thumper" cartridges touted for CQB all have low magazine capacities that are ill-suited to the purpose. Sharing the 5.56 body diameter, .350 Legend could be the best of both worlds, if only a manufacturer would introduce something other than a small "hunting" magazine.