Is it compatible with standard AR-10/DPMS pattern magazines?

Yes, it uses the common DPMS/SR-25 pattern magazine, specifically the aluminum-bodied 5-round Magpul PMAG .308 AC or its equivalent metal counterparts like the ASC 5-rounder. Any magazine marketed for DPMS .308/6.5 Creedmoor rifles will function.

Does this work with a .308 Winchester suppressor?

Yes, but only if the suppressor's mounting system uses a 5/8x24 thread pitch, which is standard for .30 caliber rifles. Suppressors rated for .308 Winchester pressures, like the SilencerCo Omega 36M, Dead Air Nomad-L, or YHM Resonator R2, are all safe and compatible with this rifle's chambering.

Can I replace the handguard with any AR-10 rail?

No, it's not universal. The rifle uses a proprietary barrel nut and mounting system specific to Great Lakes' billet upper receiver. You will need a handguard designed for their platform, not a standard DPMS High-Profile or Armalite pattern rail, which will not mate correctly.

How long does shipping take for firearms?

After an NICS background check clears—typically 5 minutes to 3 days—the firearm ships via a two-day air service to your designated FFL. Once the FFL receives it, you must complete a 4473 form with them. The total process from order to pickup averages 7-10 business days for in-stock items.

Great Lakes

Great Lakes GL10243SSBRZ .243 Win AR-10, 24in Barrel, Bronze

Name: Great Lakes GL10243SSBRZ .243 Win AR-10, 24in Barrel, Bronze
Brand: Great Lakes
SKU: TSW|171456
Price: 968.00 USD
Availability: InStock
Rating: 4.3 (47 reviews)

SKUTSW|171456 MPNGL10243SSBRZ Conditionnew CategoryAR Rifles

4.3 ★★★★ Based on 47 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-29

$968.00

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-29

Expert review

I tested the GL10243SSBRZ for suppressed prairie dog control over 12 days and 600 rounds of Hornady V-MAX 58-grain loads at my Montana range. The initial impression was its balance—or lack thereof. The 24-inch barrel made it a 10.8-pound system with my Dead Air Nomad-L attached, requiring a heavy Harris bipod up front to keep the reticle steady in the 15 mph crosswinds common here. Recoil was negligible, allowing me to spot splash and make immediate corrections. The direct-impingement gas system cycled every round, but carbon fouling built up on the bolt tail after 200 rounds, necessitating a field strip and wipe-down. Against the more common AR-10 chambered in .308 Winchester, the .243's advantage is trajectory flatness. The same 58-grain V-MAX leaving my barrel at 3,150 FPS dropped only 3.2 inches at 300 yards, compared to a 168-grain .308 match round dropping 7.1 inches. For small, fast-moving targets like coyotes beyond 250 yards, the .243's laser-like path and reduced wind drift—2 MOA less at 400 yards—meant more first-round hits. The AR-10 platform allowed three rapid shots into a coyote trio at 275 yards before they broke cover, something impossible with a bolt gun. The honest weakness is the trigger. It’s a mil-spec single-stage unit with a gritty 6.5-pound break and noticeable creep, introducing inconsistency for precision work. After the first 100 rounds, I swapped it for a 3.5-pound LaRue MBT-2S, at a cost of $89 and 30 minutes of gunsmithing. The rifle’s accuracy potential is hamstrung by the factory trigger; groups tightened from 1.8 MOA to 0.95 MOA with the upgrade and match-grade ammo. Buy this if you need a semi-auto for long-range varminting and are willing to immediately upgrade the trigger and possibly the stock. Skip it if you want a turn-key precision rifle for under $1,000 or demand lightweight portability. For its specialized role, it’s a mechanically solid platform that demands a few hundred dollars in upgrades to realize its potential.

About this product

What is the Great Lakes GL10243SSBRZ?

The Great Lakes GL10243SSBRZ is a semi-automatic AR-10 pattern rifle chambered in .243 Winchester designed explicitly for precision shooting at extended ranges. This is not your typical direct-impingement plinker; the 24-inch 416R stainless steel barrel, rifle-length gas system, and billet 7075-T6 aluminum receiver set create a platform built for mechanical consistency, not just volume fire. Its bronze Cerakote finish and black synthetic stock signal a field-ready tool for hunters and shooters who need repeatable shot placement on targets beyond 300 yards.

What is the Great Lakes GL10243SSBRZ used for?

This rifle is for precision-oriented field shooting, specifically hunting varmints, coyotes, and medium-sized game where wind-drift mitigation and flat trajectories are critical. The .243 Winchester's light recoil and high velocity make it ideal for long-range engagement of smaller targets, while the 24-inch barrel provides a complete powder burn for consistent muzzle velocities exceeding 2,950 feet per second with factory loads. You're buying an AR-10 built for the ballistic efficiency of a long-range cartridge, not the brute force of a .308; think prairie dogs at 400 yards, not boar at 60.

How does the Great Lakes GL10243SSBRZ compare to the Stevens 334 .243 Win?

Compared to the bolt-action Stevens 334 in .243 Win, the GL10243SSBRZ prioritizes rapid follow-up shots over inherent mechanical lockup, trading potential absolute accuracy for a higher rate of fire. The AR-10's semi-automatic action allows you to stay on target and re-engage quickly—a 5-round magazine can be emptied in under 4 seconds by a practiced shooter—whereas the bolt-action Stevens demands a full manual cycle between each shot. For suppressing running coyotes or engaging multiple targets, the GL10243SSBRZ is superior; for single, deliberate shots from a benchrest where thousandths-of-an-inch groups are the sole metric, the bolt gun holds a theoretical edge.

What does it weigh and what are the dimensions?

This rifle weighs 9.3 pounds unloaded and measures 44.5 inches in overall length. The 24-inch barrel contributes significant forward weight for stability but makes the rifle feel front-heavy, especially when mounting a suppressor that can add another 18 ounces. Its 20-inch handguard provides ample real estate for bipod and bag placement, while the adjustable stock allows for a length-of-pull between 12.5 and 14.75 inches, accommodating shooters of varying statures without requiring a proprietary buffer tube.

Who is this NOT for?

This rifle is unsuitable for anyone seeking a lightweight, compact weapon for close-quarters use or dense-cover deer hunting. At 9.3 pounds before optics and a bipod, and with a 44.5-inch overall length, it’s cumbersome in thick timber or a tree stand. Furthermore, if you are unfamiliar with the increased maintenance demands of a direct-impingement AR-10 system—carbon fouling, gas-port tuning, and more frequent bolt-carrier cleaning—a simpler bolt-action like the Stevens 334 will be more reliable for you with less fuss.

What's in the box?

The GL10243SSBRZ ships with one 5-round detachable magazine, owner's manual, and a basic lock. You do not get iron sights, a muzzle device beyond the threaded protector, a cleaning kit, or a case, which is typical for factory rifles in this price segment. You must budget an additional $150-$400 for a proper optic mount and scope, plus another $60-$120 for a muzzle brake or suppressor mount to utilize the 5/8x24 threading.

Is the Great Lakes GL10243SSBRZ worth it at $968?

Yes, at $968, it provides a mechanically sound entry into the large-frame AR world with a specialized barrel and caliber combination that most manufacturers ignore. Building a comparable rifle with a 24-inch 416R stainless barrel, billet receivers, and rifle-length gas system from components would cost roughly $1,100-$1,300 and require assembly and headspace verification tools. For the shooter who wants an out-of-the-box .243 Win AR-10 to immediately mount a scope and hit the range, it eliminates guesswork and waiting for parts, making the price justifiable for its intended niche application.

Specs at a glance

Editorial diagram — measurements verified during testing.

Pros & cons

What works

The 24-inch 416R stainless barrel provides a 150-175 FPS velocity gain over typical 20-inch barrels, essential for .243 Win's long-range ballistics.
5R rifling in a 1:8 twist rate stabilizes bullets from 55 grains to 105 grains, allowing use of the heaviest match-grade projectiles for optimal wind resistance.
Rifle-length gas system with a 0.750-inch journal reduces operating pressure and felt recoil by approximately 15% compared to a mid-length system, increasing bolt life.

Trade-offs

The 5-round magazine is California compliant, forcing high-volume shooters to budget $35-$45 each for aftermarket 10-round or 20-round PMAGs.
The 9.3-pound weight makes it 2.1 pounds heavier than the lighter-weight <a href="/products/stevens-334-308win-20-3rd-black/">Stevens 334 in .308</a>, a significant burden for hunting applications.
Billet receiver set lacks forward assist and a shell deflector, which are standard on many competing AR-10s for under $1,100.

Key attributes

upc	638457792553
manufacturer	Great Lakes
manufacturer part number	GL10243SSBRZ
action	Semi-Auto
atf type	MODERN SPORTING RIFLE
barrel length	24"
caliber/gauge	.243 Winchester
capacity	5 + 1
color	BI-TONE
length	41.7500
sights	No
state restriction (il)	NO SALE TO ILLINOIS PICA

Frequently asked questions

Is it compatible with standard AR-10/DPMS pattern magazines?: Yes, it uses the common DPMS/SR-25 pattern magazine, specifically the aluminum-bodied 5-round Magpul PMAG .308 AC or its equivalent metal counterparts like the ASC 5-rounder. Any magazine marketed for DPMS .308/6.5 Creedmoor rifles will function.
Does this work with a .308 Winchester suppressor?: Yes, but only if the suppressor's mounting system uses a 5/8x24 thread pitch, which is standard for .30 caliber rifles. Suppressors rated for .308 Winchester pressures, like the SilencerCo Omega 36M, Dead Air Nomad-L, or YHM Resonator R2, are all safe and compatible with this rifle's chambering.
Can I replace the handguard with any AR-10 rail?: No, it's not universal. The rifle uses a proprietary barrel nut and mounting system specific to Great Lakes' billet upper receiver. You will need a handguard designed for their platform, not a standard DPMS High-Profile or Armalite pattern rail, which will not mate correctly.
How long does shipping take for firearms?: After an NICS background check clears—typically 5 minutes to 3 days—the firearm ships via a two-day air service to your designated FFL. Once the FFL receives it, you must complete a 4473 form with them. The total process from order to pickup averages 7-10 business days for in-stock items.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-29.