There's no denying it – the AR-15 is hotter than ever as GunDigest.com readers prove with these top 10 most popular AR-15 reviews and articles of all time!

#1: AR-15 Review: The Ruger SR556 (Our Most Popular AR-15 Review Ever!)

Patrick Sweeney looks at the Ruger AR, aka the SR556. Even a few years ago, this would have been unthinkable. Read the review

#2: .223 vs 5.56: What’s the Problem?

Ammo is not ammo. And when doing a .223 vs 5.56 comparison, while the loads are almost identical, they are not the same. To know why, we have to go back to the beginning. Click here

#3: AR-15 Review: Rock River Arms Elite Operator

The Elite Operator (or to give it its full title: the RRA LAR-15 Elite Operator) is a tele-stocked carbine in 5.56. The stock is a close-appearing copy of the mondo-expensive SOPMOD stock that your tax dollars buy by the truckload. Read the review

#4: Gun Review: Rock River Arms LAR-8 Elite Operator

The first thing you notice about the Rock River Arms LAR-8 Elite Operator is that you have a stout yet maneuverable rifle in your hands. True it is heavier than a .223 version, but it is well balanced and easy to handle. Read the review

#5: Q&A: What’s the Best Tactical Rifle Available to U.S. Citizens?

Reader Thomas H. asks: “With the extensive knowledge of your experienced staff, I would like to ask your opinion. Which tactical rifle (in the U.S.) on the market is the best? Also, the same question as to semi-auto handgun in the 9mm caliber? Top three to five would be great if no consensus can be found on one.” Gun Digest responds

#6: 6 Facts About AR-15 Gas Impingement Vs. Piston

Some say the gas impingement operating system is like a person who poops on the same table they eat from. But is that really fair? Here are Richard Mann’s 6 factual observations in the AR-15 gas impingement vs. piston debate. Jump in here

#7: AR-15 Review: SIG 516 Patrol Rifle

The SIG 516 Patrol is not just another AR. It has some really cool improvements over the typical AR-style rifle. One of the most notable improvements is it’s gas piston operated. But that's not all. Read the review

#8: Tactical Long Guns: AR15 Review and Other Rifles

In a defensive situation, nothing beats a long gun for power and accuracy. Here are some of the latest tactical rifles. Click here

#9: Field Gun Review: Remington R-25

Built on an AR action, the R-25 is the definition of the ‘Modern Sporting Rifle.’ Read the review

#10: Gunsmithing the AR: 3 Tips for Buffers & Recoil Springs

In “Gunsmithing: The AR-15,” Patrick Sweeney shares tricks and information gathered over 25 years of shooting and wrenching on the AR-15. The following tips are from the chapter on buffers and recoil springs. Click here

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