New: Rock River Arms BT-2 ATR Ambidextrous Tactical Rifle

Rock River Arms announces new BT-2 ATR carbine chambered in 5.56 mm NATO.

posted on March 4, 2024
Rock River Arms

Rock River Arms is expanding its tactical firearms lineup with the new BT-2 ATR (Ambidextrous Tactical Rifle) chambered in 5.56 mm NATO.

As the name implies, the BT-2 ATR is an ambidextrous-operation carbine with upgraded components for give both left- and right-hand shooters.

The new Rock River Arms BT-2 ATR Ambidextrous Tactical Rifle is 33 inches long (collapsed) and weights 6.8 pounds.


The BT-2 ATR stands on Rock River Arms’ new BT-2 upper and lower receivers that are made from 7075 T6 billet aluminum. These precision-machined receivers include components that deliver left- and right-hand functionality.

First is the Radian Raptor charging handle, which can be released by pulling either the left or right handle, allowing single-finger or palming action to charge the firearm. Additionally, texturing along the handles provides for no-slip operation from the strong or support side—even while wearing gloves.

Next, the all-new BT-2 billet lower receiver is machined for ambidextrous bolt catch/release and magazine release systems. With these systems, the shooter can place the bolt catch/release and magazine release button on either the left- or right-hand side of the receiver.

Also, the BT-2 ATR sports an ambidextrous safety selector switch. With the lever positioned on both sides of the receiver, the shooter can easily switch between “fire” and “safe” from the left- or right-hand shooting position.

The ambidextrous functions continue with the new Rock River Arms BT-2's free-floating handguard. M-Lok compatible, the BT-2 handguard is 13 inches long and allows a quick-detach sling swivel mount to be attached to the left or right side.

Beyond ambidextrous operation, the BT-2 ATR has a 16-inch chrome-lined chrome moly barrel that is cut with 1:9-inch twist rifling for stabilizing 55-grain and 62-grain 5.56 mm NATO bullets.

Another big accuracy enhancer is the inclusion of Rock River Arms’s two-stage Ultra Match trigger group. Wire EDM cut for precision, this trigger has a 4.5- to five-pound pull weight.

As for ergonomics, the BT-2 ATR comes with the NSP-2 six-position CAR stock. Designed to promote an ideal cheek weld, the NSP-2 also includes ambidextrous quick-detach sling swivel pockets for mounting the sling to the left or right side of the stock.

Finally, the BT-2 ATR is fitted with a Hogue beavertail pistol grip. With its high-traction rubber finish, textured grip panels and finger grooving, Rock River Arms said “this grip offers one of the most comfortable, slip-free purchases of any grip on the market today.”

One polymer 30-round magazine is included with the Rock River Arms BT-2 ATR Ambidextrous Tactical Rifle.

MSRP is $2,110. Go to


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