Best 5.56 Rifles That Are Not AR-15s

We all know in the world of tactical 5.56 rifles, the AR-15 rules. Oftentimes, it seems like the only choice for a modern semi-auto 5.56 caliber rifle. 

What if I told you it didn’t have to be? 

What if I told you there were better or, at the least, alternative options? As a natural-born contrarian, I have a hard time settling for the rifle in use by everyone else. 

So, I seek out alternatives. I’ve even found some of what I consider the best 5.56 rifles that aren't AR-15s. 

The rules are simple when it comes to selecting 5.56 rifles that aren’t AR-15s -- it must be in 5.56 and can’t be an AR-15. We're also keeping to guns that you can actually find out in the wild, so that means no discontinued models. (R.I.P. FS2000, Sig Sauer 556, & C93.)

Believe it or not, there are lots and lots of non-AR-15 rifles in 5.56, but many of them are hard to love.

I’ve found a handful worthy of being called AR-15 replacements in various configurations and designs. But before we start, I also want to address the elephant in the room. 

Best 5.56 Guns That Aren't AR-15s

1. CZ Bren 2 MS Carbine - Best Ergonomics

Best Ergonomics

CZ Bren 2 MS Carbine

$1711

at BattleHawk Armory

Prices accurate at time of writing

$1711 at BattleHawk Armory

GrabAGun (see price)

Kygunco (see price)

Specs

• Action: Short-stroke gas piston
• Caliber: 5.56 NATO, 7.62x39mm
• Capacity: 30
• Barrel Length: 8", 9", 11", 14.1", 16.5"
• Weight: 5.4 lbs - 7.3 lbs

Pros

• Cold hammer-forged barrel
• Folding stock
• Short-stroke gas piston system

Cons

• Price
• Minimal aftermarket

As a tactical hipster, I can’t make this list without adding CZ.

The CZ Bren 2 MS Carbine is the latest generation of the Bren series.

Though the original Bren was designed for a military contract, the Bren 2 (Electric Boogaloo) was made for civilian and law enforcement sales. 

Being outside of a military contract allowed CZ some room to grow.

The Bren 2 is incredibly lightweight and uses an aluminum upper with a carbon fiber composite lower. And the rifle variant weighs 7.3 pounds. I do appreciate a good light rifle. 

The controls also outperform most guns in its class. Its nonreciprocating charging handle can be swapped from left to right.

After that, everything is truly ambidextrous. This includes the magazine release, bolt release, and safety. 

The MS model has a modular handguard system that allows the end user to shorten or extend the handguard as needed.

Also, barrel swaps are very easy, so converting this gun to an SBR is a real possibility. 

The Bren keeps the short-stroke gas piston system, and the gun uses a folding stock to shrink the gun to a mere 28 inches.

Both rifle and pistol variants are now available, and pistol variants are begging for a brace. It is worth noting that the new and updated Bren 3 is just around the corner and is slated for release in the coming months.

2. Steyr AUG A3 M1 - Most Battle Proven

Most Battle Proven

Steyr AUG A3 M1

$1650

at Bereli

Prices accurate at time of writing

$1650 at Bereli

Guns.com (see price)

Specs

• Action: Short-stroke gas piston
• Caliber: 5.56 NATO
• Capacity: 30, 42
• Barrel Length: 16.4", 20", 24"
• Weight: 7.3 lbs - 10.8 lbs

Pros

• Compact
• Quick-change barrels
• Rugged

Cons

• High MSRP
• Sub-optimal trigger

The Steyr AUG is one of the most successful bullpup designs ever.

It addressed many bullpup problems in its design and allows for comfortable use for both lefties and righties. The ergonomics are absolutely outstanding. 

The AUG first entered service in 1978, so for a rifle in its 40s, it’s held up rather well.

Steyr currently sells the AUG A3 M1 model. This model offers various length sections of Picatinny rail to attach your favorite optics as well as the famed integrated optics options. 

Now, the details!

The AUG uses a clean running short-stroke gas piston system that vents excess gas forward and out of the rifle. It's incredibly reliable and surprisingly modular.

Dedicated Steyr fanboys have made numerous changes to the rifle and have enhanced its ergonomics, so you're bound to find plenty of fun ideas on the web on how you can customize your baby.

Steyr also embraces these companies and builders, seemingly supportive of their efforts.

Can you say customization one more time for me? Customization. Hells yeah. Not only can you spring for 20-inch or 24-inch barrels, but Steyr even recently released .300 Blackout barrels as well.

The AUG has maintained its status as an excellent combat rifle and has more than proven itself.

Check out our Steyr AUG Hands-On Review.

3. IWI Tavor X95 - Best Bullpup

Best Bullpup

IWI Tavor X95

$1770

at BattleHawk Armory

Prices accurate at time of writing

$1770 at BattleHawk Armory

Palmetto State Armory (see price)

GrabAGun (see price)

Specs

• Action: Short-stroke gas piston
• Caliber: 5.56 NATO
• Capacity: 30
• Barrel Length: 13", 16.5", 18.5"
• Weight: 7.5 lbs - 8 lbs

Pros

• Short overall length
• Reliable

Cons

• Gassy when suppressed
• Mediocre trigger

Staying on the bullpup train, let’s talk IWI's Tavor line. When I say Tavor, I mean all the 5.56 models, from the old standard to the newer X95.

The Tavor series is likely the most popular 5.56 bullpup in the States. 

Out of Tavor's line, the X95 has one of the better bullpup triggers and is considerably lighter than the competition.

Timney and Geissele produce drop-in Tavor triggers to make the trigger even better.

The gun has also proven to be an ergonomic bullpup with AR-like controls that are relatively easy to learn. 

IWI's Tavor series has a more modern design than the AUG, offering an easier time accommodating accessories and rails.

You also get a nice long, flat top upper with plenty of optics space. 

This light and handy gun has quickly become a favorite on the bullpup market.

The Tavor X95 is a mere 26.125 inches long with a 16.5-inch barrel. IWI even produces SBR variants with 13-inch barrels if you need to go even shorter. 

Check out our full review of the X95 here.

What's your take on the Tavor? Rate it here!

4. KelTec SU-16CA  - Best Budget Option

Best Budget Option

KelTec SU-16CA

$664

at GrabAGun

Prices accurate at time of writing

$664 at GrabAGun

Sportsman's Warehouse (see price)

Specs

• Action: Short-stroke gas piston
• Caliber: 5.56 NATO
• Capacity: 10, 30
• Barrel Length: 16"
• Weight: 4.7 lbs

Pros

• Relatively affordable
• Super light weight
• Ultra-reliable

Cons

• Rough recoil

So far, every 5.56 rifle alternative to the AR-15 has been a relatively expensive weapon.

The AR market is so saturated that the prices are at an all-time low -- even with post-pandemic pricing.

If you are on a budget but still want an AR alternative, the KelTec SU-16 might be your choice. 

The SU-16 is a unique rifle that’s unlike any other.

Some variants feature fixed stocks, but the SU-16C sports a bizarre but cool, under-folding stock.

KelTec released a bunch of models that come with various features and barrel lengths. 

For instance, the SU-16B is the carbine variant with a fixed stock and weighs a mere 4.5 pounds. Now that is a lightweight rifle. 

Several models have a handguard that converts to a bipod or stocks that allow the storage of extra magazines.

The SU series uses a unique gas piston design that allows for reliable operation.

Admittedly, the recoil is a little rougher than most, but a 4.5-pound rifle will do that.

While prices have gone up on these, they are still often under $700, with some being a little more depending on the features.

They are superbly small and minimalist in design, so they can be an excellent choice for someone on a budget or someone who wants to go as light as possible. 

5. Robinson Armament XCR - Most Caliber Options

Most Caliber Options

Robinson Armaments XCR

$2259

at Robinson Armament

Prices accurate at time of writing

$2259 at Robinson Armament

Specs

• Action: Long-stroke gas piston
• Caliber: 5.56 NATO, .300 BLK, 7.62x39mm, 6.8 SPC, 6.5 Grendel, 5.45x39mm, .224 Valkyrie, 6mm ARC, .22 ARC
• Capacity: 30
• Barrel Length: 7.5", 9.5", 12", 16"
• Weight: 5.2 lbs - 7.5 lbs

Pros

• Uses AR-15 magazines
• Easily converts to other calibers
• Soft shooting

Cons

• Expensive

When it comes to high-end, modular 5.56 caliber rifles, the Robinson Armament XCR is tough to beat.

It comes in many different calibers, barrel lengths, stock, handguard configurations, and more.

Obviously, we are picking the 5.56 model, and to simplify things, let’s go with the XCR-L Standard with a 16-inch barrel.

The XCR series utilizes a long-stroke gas piston combined with a heavy-duty bolt. Its famed bolt outperforms the AR-15 series and offers more reliable and longer-lasting performance.

The absence of a receiver extension for the buffer allows you to use a folding stock --- including a wire style stock, the Magpul Zhukov stock, and even ACR stocks.

The XCR does use AR-15 magazines --- a big selling point as far as I’m concerned.

If 5.56 isn’t enough, converting to various calibers is hardly an issue. The ability to swap calibers without an armorer makes the weapon one of the most modular on the planet.

Plus, it’s plenty accurate, soft-shooting, and reliable with various barrel lengths.

We get a fair amount of influence from some of the world’s best rifles to form one excellent option if the world of the AR-15 has largely bored you.

6. IWI Galil ACE Gen 2 - Editor's Pick

Editor's Pick

IWI Galil ACE Gen 2

$1821

at Bereli

Prices accurate at time of writing

$1821 at Bereli

Midway USA (see price)

Palmetto State Armory (see price)

GrabAGun (see price)

Specs

• Action: Long-stroke gas piston
• Caliber: 5.56 NATO, 5.45x39mm, 7.62x39mm
• Capacity: 30
• Barrel Length: 16"
• Weight: 8.3 lbs - 8.7 lbs

Pros

• Reliable
• Accurate
• Durable

Cons

• Heavy
• No included iron sights

It’d be easy to leave us Galil fans clamoring, but IWI does more than produce a Galil. They produced a modern Galil in the form of the ACE Gen 2.

IWI’s commitment to the Galil platform earns my respect.

Since the gun makes the list, you can bet your bottom dollar it comes in 5.56. Better yet, it even uses AR-15 magazines!

Now, what does the new Galil do to make the list?

Well, that’s easy. It comes with a long M-LOK handguard, massive optics rail, side folding stock, and ergonomics that make AK fanboys whine.

Yet we still get that AK reliability and the long-stroke gas piston design that’s proven to be rugged in the worst places the world has to offer.

It’s admittedly a heavy rifle, especially in the days of ultralight ARs. However, the Galil ACE Gen 2 gives you a smooth shooting rifle that’s plenty accurate and a ton of fun to handle.

This gun gets you farther and farther from the AR platform, and when you’re bored of ARs, you might want to stay far away.

Johnny took the Galil ACE Gen 2 for a ride, so be sure to read his full review or check out the video below.

Honorable Mentions

Brownells BRN-180 Gen 2

The BRN-180 from Brownell's is a modernized version of the ArmaLite AR-180 that can use standard AR-15 lower receivers. Since half of it is a regular AR-15, we didn't include it in our main list.

It uses a short-stroke gas piston that loses the need for a stock with a buffer system, which allows you to use a folding stock with the ability to still operate the weapon. The internal buffer system is contained in the upper receiver with a dual spring design that makes the BRN-180 a soft shooting rifle. 

Be sure to check out our complete review of the BRN-180 Gen 2 Upper!

Sig MCX Spear LT

Like the BRN-180, Sig's MCX Spear LT uses a different operating system than your standard AR-15. But again, these guns are so close to the AR-15 in design that we didn't include it in our main list.

Some consider this gun to be the next evolution of the AR platform thanks to its ease of suppression, folding stock, and fully ambidextrous controls.

You can take a look at our hands-on review of the LT's big brother, the .308 Sig Spear.

Ruger Mini-14

The Ruger Mini-14 was the primary AR-15 alternative until the mid-2000s.

They are intuitive to use, reliable, and feel very handy. We love these guns, but their mediocre accuracy and the fact they are over $800 now have pushed them out of the realm of interest for many prospective shooters.

We have a full hands-on review of the Mini-14 for those who are still interested in these sweet guns.

Why You Should Trust Pew Pew Tactical

Leading this search is Travis Pike, a Pew Pew Tactical author and gun writer. Travis has spent thousands of hours at the range testing and evaluating gear as well as researching the best models available on the market. His experience as a Marine Corps machine gunner, NRA-certified instructor, concealed carry trainer, and competitor gives him unique insight into a wide variety of guns.

Editing this article is Wyatt Sloan, Jr. Editor. Wyatt is an NRA-certified instructor with previous experience as a USPSA competitor. Wyatt personally owns over 200 firearms and has 10 years of home-based FFL firearm sales. He has used his extensive experience with firearms at large to test guns for Pew Pew Tactical — evaluating them based on our standards and metrics.

Editor-in-Chief Jacki Billings runs our experienced team of gun reviewers. She is a member of the Society of Professional Journalists, ACES: Society for Editing, and the Professional Outdoor Media Association. Jacki has a bachelor’s degree in Mass Communications and has worked as a media professional for close to 20 years, specializing in gun media for almost 10 years. She uses her extensive professional journalism and editing experience to set testing protocols and editorial standards.

Final Thoughts

Admittedly, I’d love to see more AR alternatives, but they are often difficult to sell in a market dominated by one rifle type.

It takes a helluva good rifle to stick around in a market where ARs can be had for $400. 

The above rifles are well-tuned, well-designed, and made to last. They also offer you something different from the old standard AR-15 in how they operate, handle, and feel. 

What AR-15 alternatives would you add? Or just check out Best AR-15 Alternative Calibers. Need to feed the beast? Check out the Best 5.56 Ammo.

Latest Updates

• October 2024: Moved the BRN-180 and Sig MCX Spear LT to honorable mentions. Additional information was added for each firearm.
• April 2024: Marcolmar Cetme L and KelTec RDB removed.