The lower receiver of the LAR-6.8 employs traditional, non-ambidextrous controls. This is a simple, straightforward and capable carbine.

As a big fan of the 6.8 SPC cartridge, it is always a pleasure for me to take the time to test a rifle in this chambering. The 6.8 SPC has been the most successful to date of those cartridges attempting to get a solid “short 30” into an AR-type rifle. There is no doubt that it has had its issues, but it is still around and a favorite among many operators, including elite military units, and has a strong following in the Special Operations field. The 6.8 SPC is pretty mainstream these days and many larger companies build these rifles as complete weapons or upper receivers, and it has good ammunition support. They are available as affordable conversions or top-end, piston-driven guns. For proponents, it really answers many of the questions that have come up over the years concerning the 5.56mm round. It continues to do so, and is a viable alternative to the smaller bullets.

The LAR-6.8 from Rock River combines a cool-running mid-length gas system with the highly capable 6.8 SPC cartridge. Shown equipped with a Leupold HAMR Mark 4.

It is really hard to find common ground for law enforcement needs when it comes to weapons and ammunition. Although it can be convenient to lump all of law enforcement together, it’s also really counterproductive. Often what we need falls squarely in the middle.

To ensure that shooters are fully aware of the chambering, Rock River placed “6.8 SPC” markings above the ejection port. All Rock River upper & lower receivers are made from forged and milled mil-spec 7075 T6 aluminum alloy.

Historically, at least when it comes to rifles, we have always been given the same systems used in the military. This happens for a few reasons. Former military personnel make up a large portion of law enforcement to this day. People like to use what has worked for them in the past and what is familiar. The weapons our troops use are typically reliable, simple and effective. The law enforcement profession needs all of these things in a rifle. Lastly, in many cases agencies can secure surplus military rifles that are affordable.

A direct gas impingement system of operation is employed in the Rock River carbine, as well as a proprietary PRI magazine designed for the 6.8 round.

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The lower receiver of the LAR-6.8 employs traditional, non-ambidextrous controls. This is a simple,…