First Look: Rock River Arms ATH Rifle

A new AR-15 that’s designed for the great outdoors.

posted on September 12, 2022
Rock River Arms All Terrain Hunter

Rock River Arms is introducing a new AR-15 pattern varmint hunting rifle called  the Rock River Arms All-Terrain Hunter (ATH). This new AR-15 is built around a heavy cryogenically treated 18-inch stainless steel barrel with a 1:8-inch twist. It has a .223 Wylde match chamber that is guaranteed by Rock River Arms to shoot ¾-MOA groups . The .223 Wylde chamber configuration is optimized for maximum accuracy in .223-caliber rifles with a shorter chamber throat and also by slightly changing the geometry of the chamber itself. These chambers can handle either types of ammunition, no matter if it is 5.56 NATO or commercial .223 Remington.

The Rock River Arms All-Terrain Hunter is designed with a full size 13-inch extended, lightweight, free-floating rail system that provides ample space for hunters to attach all sorts of hunting accessories, especially for low light varmint hunting conditions. The rail’s topmost surface has a full section of Picatinny rail, while the sides and bottom are designed to be M-Lok compatible. Topping off the features of this rifle is Rock River Arm’s factory two-Stage Varmint trigger that has a 3.5 to 4 pound trigger break.

Rock River Arms All-Terrain Hunter Specifications:

  • Forged upper and lower receivers
  • Caliber: .223 Remington
  • Barrel: 18-inch heavy match stainless steel, cryogenically treated 1:8-inch twist rate, cut with .223 Wylde chamber
  • Handguard: RRA 13-inch M-Lok compatible free-floating rail
  • Gas System: Mid-length direct impingement
  • Gas Block: Low profile
  • Muzzle Device: RRA Operator brake with ½x28 tpi threads
  • Trigger: RRA 2-stage Ultra Match Varmint trigger with oversized trigger guard
  • Safety: Star safety
  • Length: 36-inches with stock retracted
  • Weight: 7.6 pounds
  • Includes one 20 round magazine, instruction manual and warranty information paperwork and a hard plastic carrying case.

Retail pricing for the Rock River Arms All-Terrain Hunter AR-15 rifle starts at $1,425. For more information on this varmint hunting rifle or other firearms offered by Rock River Arms, please visit their website at


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