Rock River Upgrades Varmint Series Rifles

Rock River Arms announced an upgrade to the company’s varmint rifles.  The new rifles now use a proprietary free float handguard called the Top Rail Octogonal or TRO.

The TRO design allows for better airflow around the barrel for cooling and more options on the placement of accessory rails.  The rifles are available in right- and left-hand models.


Barrel lengths of 16″, 18″, 20″ and 24″ are available.  The guns have .223 Wylde chambers.

Richard Johnson

An advocate of gun proliferation zones, Richard is a long time shooter, former cop and internet entrepreneur. Among the many places he calls home is


  • Cornelius Carroll

    Since this is RR related, anyone seen an LAR-47 in the flesh yet? Seems to be a bit of a unicorn at this point.

    • big daddy

      Many companies use that ploy to get people to their web site. Before the internet a business would put items in their show case without a price or an exorbitant price without the intent to ever sell it. It brings people in and makes them think your store is really cool. It’s an old trick and effective. RRA will never make those rifles yet they’ll keep it their for years. They probably made a few and the price point went beyond their limits. They are a low to mid quality rifle and the 7.62×39 version of the AR with that lower and AK mags was problematic which means warranty work, something RRA would want to avoid. Too bad we have restrictive Laws an Israeli company makes something like that for military use.

      • Billy

        I’ve talked to them before. They are working on it and it’s moving forward, it’s just slow, why spend time and effort into research when for the past two years all you had to do is make the orginal stuff and you can sell that out? I know they’ve bought a ton of surplus AK mags and have been going through them to work with them. So it’s a true project. If you’ve noticed established companies recently haven’t been putting out new things, it’s almost all been start ups. This recent rush of stuff has killed established R&D as nobody can produce more anyway.

      • nadnerbus

        I’ve heard RR revered to as low to mid quality before, and I understand the reasoning behind it. Cheaper alloys for the receiver and lesser steel in the bolt. Commercial extruded receiver extension, 1 in 9 twist, etc.

        Does anyone have data to actually support these rifles failing more often? Obviously, mine is used as most civilian rifles are: a safe queen that gets love maybe two or three times a year followed by good cleanings each time. But I have never had even the slightest issue with mine. Over three thousand rounds, with not a single failure from the first to the last. With that in mind, I feel like I got an incredibly good value for the money. Will I come to regret it some day?

        • Cornelius Carroll

          Check out post #1347 at the link below:

          IMO, RR is fine for civilian purposes. For a similar price point, you might be better off with PSA. I’d certainly take RR over Bushmaster, DPMS, and many of the new “start-up” manufacturers.

        • Ergo

          Rock River makes a decent rifle. They have excellent customer support after the sale. I doubt you will regret it.

  • gunslinger

    so what’s the difference between a left hand free float tube and a right hand free float tube? are they asymmetrical for a better grip and thus the need for a LH/RH version? i don’t see it from the image above.

    • Paul Epstein

      Uh, the writeup says that the RIFLE is available in left hand and right hand, which refers to a lot of components but has nothing to do with the free float tube. If you’re responding to an error in the post that has since been corrected, disregard.

  • Ergo

    I wish i could find more reviews on that tro handguard. I came very close on pulling the trigger on one for my last build but decided against it. I’d rather someone else be the guinea pig.

  • Rifleman

    Since when is adding a proprietary part considered an “upgrade”?