In addition to elevated production by recognized AR15 outfits, each and every firearm supplier that has a heartbeat seems to be building some version of an AR-15 now. Half of those rifles are direct-impingement types with the same solid design envisioned by Eugene Stoner when it was first introduced more than 40 years ago.

Rock River Arms was launched 11 years ago by 2 brothers, Mark and Chuck Larson, who worked out of a garage. It has developed gradually ever since as well as today employs over 90 folks. Although Rock River produces firearms for several federal government agencies, the actual bulk of their sales are to the civilian marketplace. Rock River Arms offers fifty or so versions of rifles, however customers can make up their own designs, using numerous parts substitutions - sights, rails, stocks, barrel length and contour, and more. Rock River will additionally add add-ons like flashlights and red dot sights. Rock River Arms is like an a la carte workshop for firearms. Rock River doesn’t make numerous components on site. Rock River designs and spec components, then receive them, perform inspections, finish them, assemble them into rifles and ship them out. The Rock River Arms facility is complete with a buffing and blasting area, where raw forgings become finished parts. Rock River Arms is definitely a family business with the brothers Chuck and Mark Larson as well as their father and one of their sons working at the plant. Looking about the manufacturing facility there were many boxes of rifle carrier groups, essentially the bolts of the rifles. Rock River Arms offers an almost countless number of chambering options for the basic AR platform. Once you own a lower half which consists of the stock and receiver, you can buy upper halves (barrel, carrier group, and gas system) in all kinds of chambering and interchange them freely. There's even a company that offers a .410 shotgun upper half for the AR15 rifle.

Components are measured and tested as they arrive in to the production facility and at various stages during production. Tested for hardness, testing is done all the way down to the flash hider. All of the little sub assemblies - sights, gas blocks, carrier groups, safeties, and so on -- come together at the stations where the upper halves and lower halves are put together. Once at a work station the gunsmith assembles the upper half of what will be a future complete rifle. The gunsmith takes special care to assemble the upper with the silver tube running along the top of the barrel which directs gas from the gas block to run the action. During the upper half assembly, the headspace gauges are used to examine the dimensions of the chamber. The bolt of a rifle should close over the green “go” gauge but not close over the red “no go,” which is slightly oversized. Cartridges can rupture, occasionally dangerously, in an oversized chamber. Rock River offers the choice of a standard trigger or a two-stage National Match trigger for serious target shooting. A two stage trigger is the recommended style for military rifle competitions such as the famous National Match at Camp Perry, Ohio. Pulling a two-stage trigger, you feel slack as the trigger moves a short distance, then a light, clean break. The Rock River Arms gunsmith will check the weight of the trigger pull by hanging a 4 1/ 2 lb weight from the trigger. If the weight doesn’t trip the trigger, he will file the trigger sear to lighten the pull. Lighter trigger pulls are also available from leading Rock River Arms dealers. Lowers also come with options such as an oversized winter trigger guard, originally designed for police officers who needed to keep their hands inside warm gloves but still be ready to shoot in cold weather. Winter trigger guards work perfectly for winter coyote hunters as well. As the final pieces are assembled into a lower half of what will be the final rifle, this lower half could also be matched to an endless combination of barrel lengths, barrel contour, hand-guards and calibers.

Once uppers and lowers are joined to complete the final rifle configuration they are tagged and ready for test firing. All rifles are custom built according to customer specifications.

In the shipping area, parts come in, guns go out. There seems to be no end to the demand. Rifles usually are sitting on dealers’ shelves for a few days before they’re gone. For dealers that take deposits, guns never even make it to the shelves before they are picked up by a local customer or shipped out again.

Every rifle is sighted in and test fired before it leaves the factory. The Rock River Arms finisher loads the magazines prior to every rifle test fire. Using a fast bench loading tool, the finisher snaps 20-30 rounds into a magazine in an instant.

Several times a day, assemblers and firearm testers load the Rock River van with weapons and take them out to the range. Shooting from the back of the vehicle, each and every rifle with sights is sighted in, and then test-fired for function. Testers shoot at least two magazines through the fully automatic guns. Who says semi automatics aren’t accurate? With barrels provided by Wilson Barrel, the principal attraction of Rock River Arms rifles is that they shoot far better than advertised.

The fit and finish of the Operator 2 rifles are wonderful and emphatically a step above the typical, rack-grade, Parkerized mil-spec AR on the market today, although they are slightly more expensive than those lesser grade models. The Operators upper and lower receivers fit together so strongly I required a tool to work out the push pins. While the Rock River Arms Operators don't have pistons or monolithic fore-ends or flip-down rear sights, they have everything you need in an accurate, reliable semiautomatic rifle, at a price that way back when would have been unheard of. The Rock River Arms AR15 BB2522 Operator 2 is created with a 16 1/2" Chrome Moly barrel for accuracy, Rock River Arms Tactical Muzzle Break with exceptional signature reduction, Flip forward sight, Rock River Arm Quad-rail hand guard and much more... The Rock River Arms Tactical Rifle AR15 Model BB2522 Rock River Arms also contains such top quality upgrades as rugged fixed rear sight and flip forward sight to offer you a lot more longevity and aesthetic appeal. With the forward flip sight feature, the Rock River Arms AR-15 AR15 Model BB2522 Rock River Arms Operator 2 is set for action to further incorporate a scope or red dot.

The Rock River Arms AR-15 AR15 BB2522 Operator 2 rifle includes a Rock River Arms winter trigger guard and the ERGO Sure Grip. While I prefer a hard pistol grip, I have long advocated use of pistol grips such as the ERGO that add a little material to the backstrap of the rifle. Standard AR pistol grips are too small for anyone who do not have child-size hands, and they encourage poor shooting technique by positioning the second joint of the finger on the trigger. Replacement grips such as the ERGO correct that problem. The rifles are furnished with the RRA Star safety/selector, which sticks out a bit more from the receiver than a mil-spec safety. It is not ambidextrous. The safety worked just like it should, but I like the looks of the mil-spec design better probably because its what I am used to. When I first acquired the Operator and tried the trigger, I was really shocked. As a general rule, production line triggers on AR-15s are unpleasant. Not so the Operator trigger. Its crisp, light, two-stage trigger that breaks right at 4 lbs -not what I was expecting at all. This was right before I realized that all the Operator rifles come equipped with Rock River Arms well-respected two-stage National Match trigger system, which features a lightened hammer.

The first headache always, with any kind of weapon, is dependability, my Operator functioned with not a hitch. I fed the Operator ammo from Wolf, Winchester, Remington and Black Hills, with numerous bullet weights and types, and the rifles digested it all. I used the equipped magazines for testing as well as some surplus magazines I found available, along with a some MagPul PMags.



Load Muzzle Velocity (fps) Standard Deviation (fps) Group Size (in.), Black Hills 55-gr. SP 2,910 12 0.99, Black Hills 60-gr. V-Max 2,880 16 0.87, American Eagle 55-gr. FMJ 2,810 24 1.05, Black Hills Match King 69-gr. HP 2,780 21 1.03, Hornady 55-gr. V-Max 2,935 13 1.11, Black Hills 52-gr. HP 3,042 18 1.12

Notes: Accuracy results are the averages of four five-shot groups at 100 yards from a sandbag rest. Velocities are averages of three shots measured with an F-1 Alpha chronograph 12 feet from the muzzle. Abbreviations: FMJ, full metal jacket; HP, hollowpoint; SP, softpoint.

It is easy to get great groups from a below average rifle if it has a great trigger, but put a tack-driver with a gritty eight-pound trigger in anybody's hands, and they will be lucky to stay on paper. The Rock River Arms Operator rifles are not just inherently accurate (that's one plus to the AR design), they are equipped with quality triggers that enable the user to get the most out of them.

Rock River Arms Tactical Rifle AR-15 Model BB2522 Rock River Arms has a list price of 1515.00. I ended up ordering it over the internet for much less. Many dealers in my vicinity required list price ... plus which did not set well with my spending plan. I obtained my Rock River Arms AR-15 Model BB2522 Rock River Arms from Class 3 Weapons in Houston, Texas at a substantial cost savings. Rock River Arms is currently offering the Operator rifles as a package deal, with the rifle of your choice equipped with its National Match two-stage trigger, any one of four rear sights, a one-inch or 30mm Hi-Rise scope mount, two 30-round magazines and a case. These bundles start at an incredibly economical price of $1,000 according to the RRA factory website. I ended up purchasing it online for much less. Most dealers in my vicinity wanted retail plus which did not set well with my budget. I purchased my Operator from Class 3 Weapons in Houston Texas at a substantial savings of only $969.00 which included shipping. Depending on where you live your cost will deviate based on shipping and taxes if relevant. For the time being, thanks Rock River for a awesome firearm and keep up the good work. I am off to the community firing range to see what this power house is capable of doing again.


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The Bushmaster Model ACR-SS-16M4BF-B has a list cost of $2490.00. I wound up buying it on-line for significantly less. Most dealers within my area wanted list plus which didn't set well with my financial position. I ordered from Class 3 Weapons at a substantial cost savings. Once I get to the shooting range I will have some follow up particulars on dependability and what ammo I am using. I overlooked to say, the extras I purchased was a laser to attach on the rail just forward of the hand-guard and a Aimpoint optic. I don’t know which kind of sight I will select though. No matter what way I am going, laser or red dot, it won't be wasted because I possess a handful of Weapons in the vault that I’d love to try either on. Some time in the next couple of of days I will be out to the firing range to take the firearm out to a hundred yards, which is the farthest I can get at our area shooting range. I'm also waiting for delivery of a couple more ammunition types, but I'll keep you posted. For now, thanks Bushmaster Firearms for a awesome firearm and keep up the good work. At any rate, I’m off to the nearby firing range to see what this power house can do....

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