New Rock River Arms Big-Bore ARs – SHOT Show 2017

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Rock River Arms has long been a staple of the AR market, offering high-quality rifles in a range of interesting configurations. For 2017, the company has developed a new fluting pattern as well as expanded out its 7.62 AR-based line of firearms with new models and chamberings.

What’s New

To give shooters a new option with some visual flair as well as some useful enhancements for the rifle, Rick River Arms has released the new “Snake River Fluting” pattern that is visually interesting and also very effective. It has grooves that are not deep enough to be considered heat wells, but still deep enough to enhance cooling as well as lighten the overall weight.

Also new from Rock River is the BT-3, a large-frame .308 AR featuring billet receivers as well as the ability to take Magpul-pattern 7.62mm magazines. The eye-catching rifle features Snake River Fluting, a carbon fiber handguard and is offered currently in a 20-inch-barreled “Varmint” model, although other variations are planned for release.

In addition to the new BT-3 is the Predator HP, a large-frame AR that is now offered with a stainless fluted barrel as well as being chambered in .308, 6.5 Creedmoor and .243 Win.

For more information, visit

To purchase a Rock River Arms firearm on, click this link:

About the author: Clay Martin is a former Marine and Green Beret, retiring out of 3rd Special Forces Group. He is a multi-decade and -service sniper, as well as 3-Gun competitor and Master ranked shooter in USPSA Production. In addition to writing about guns, he is the author of “Last Son of The War God,” a novel about shooting people that deserve it. You can also follow him on twitter, @offthe_res or his website,

{ 4 comments… add one }
  • Archangel February 27, 2017, 10:32 pm

    Sadly the new standard caliber is 5.56.
    The real “BIG BORE” AR’s are many thousands of dollars and most of us can’t even dream of getting one.
    However, I did build an AR-308 in 45 Raptor, so a 460 S&W Magnum that loads using a 308 style case.
    Technically it is a pistol round rifle but I don’t think the local pistol range will let me shoot it there.

  • bob coxxafloppin February 27, 2017, 12:36 pm

    wow – those are really useless comments

  • Opus February 27, 2017, 9:36 am

    Wow – how times have changed. I remember when “bog bore” meant .40 cal or larger. Showing my age. Beautiful rifles, all the same.

  • triggerpull February 27, 2017, 9:27 am

    Wow–and here I was expecting a 416 rigby or some such. I guess big bore doesn’t mean as much as it used to in this day.

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