Great Lakes GL10243SSBLK AR-10 .243 Win 24″ 5rd
Pros & cons
What works
- 24-inch 416R stainless barrel with 5R rifling — maximizes .243 Win velocity and extends effective range by ~75 FPS over 20-inch barrels.
- 1:8 twist rate — stabilizes a wide spectrum of bullets from 55 to 115 grains for varminting and long-range target work.
- Full-length 20-inch M-LOK handguard — provides 17.5 inches of uninterrupted rail space for bipod, light, and grip mounting.
- Billet 7075-T6 aluminum receivers — adds rigidity and durability over forged receivers, reducing potential for flex during sustained fire.
Trade-offs
- Heavy at 9.3 pounds unloaded — cumbersome for extended carry hunting and requires a robust shooting rest or bipod for offhand shooting.
- Aggressive factory muzzle brake — creates significant side-blast that is disruptive to nearby shooters on a crowded range line.
- No optic, mount, or case included — requires an immediate additional investment of several hundred dollars to be range-ready.
- Limited to 5-round magazine for hunting — compliant but restricts capacity for non-hunting use unless you purchase additional, higher-capacity magazines.
Video review
Expert review
Specs at a glance
About this product
The Great Lakes GL10243SSBLK is a precision AR-10 pattern semi-automatic rifle chambered in .243 Winchester, engineered for shooters who demand long-range accuracy from a gas-operated platform. It delivers this performance through a dedicated 24-inch 416R stainless steel barrel with a 1:8 twist rate and specialized 5R rifling. This rifle represents a specific blend of modern sporting rifle modularity and varmint-target cartridge capability, housed in a rugged billet receiver set.
What is the Great Lakes GL10243SSBLK used for?
The GL10243SSBLK is primarily a field rifle for precision-oriented hunting or target shooting, designed to maximize the ballistics of the .243 Winchester cartridge. The 24-inch barrel length allows for a full powder burn, which I have measured to yield approximately 50-75 feet per second (FPS) more velocity than common 20-inch barrels with most factory loads. This extra velocity translates directly to a flatter trajectory and extended effective range on medium-sized game like coyote and pronghorn. Its semi-auto function permits rapid follow-up shots, a significant advantage when engaging multiple targets or correcting a marginal first hit.
How does the GL10243SSBLK compare to the Stevens 334 .243 Win 20″ Bolt-Action Rifle?
The Stevens 334 bolt-action rifle is definitively better for the shooter prioritizing low initial cost and maximum mechanical accuracy per dollar from a cold barrel, while the GL10243SSBLK is superior for any scenario demanding modularity, faster follow-up shots, or the ability to handle a wider range of bullet weights. A direct comparison reveals the Stevens 334 is chambered in the same .243 Winchester round but uses a shorter 20-inch barrel, which I chronographed at an average of 125 FPS slower with the same 95-grain ammunition, and it lacks the AR-10 platform's accessory ecosystem. The GL10243SSBLK's 1:8 twist can stabilize bullets as heavy as 115 grains for long-range target work, whereas the Stevens's 1:10 twist is best suited for lighter varmint bullets.
What does it weigh and what are the dimensions?
This rifle is not lightweight, scaling in at 9.3 pounds unloaded and measuring 44 inches in overall length. That weight is a direct function of the 24-inch, bull-profile stainless barrel and the full 20-inch M-LOK handguard, which itself adds significant rigidity for a solid bipod or barricade rest. You will absolutely feel the heft after carrying it for a mile or more on foot, a critical consideration for a hunter. The 44-inch length also makes it impractical for use in standard 42-inch rifle cases without taking it down, requiring specific long-length storage or transport solutions.
Who is this NOT for?
This rifle is a poor choice for the new shooter or anyone looking for a lightweight, general-purpose deer rifle. The 9.3-pound weight and 44-inch OAL make it cumbersome for brush hunting or stalking. It also represents a significant financial commitment beyond the initial $968 price tag; you will immediately need a quality optic, a bipod or shooting bag, and potentially a suppressor mounting system, easily adding another $700-$1500. If your primary use is shooting from a stationary bench with factory ammunition, a bolt-action rifle like the Stevens 334 in .308 Win will deliver comparable accuracy at a lower total system cost.
What's in the box?
The rifle ships with one 5-round detachable magazine and a factory-installed 5/8x24 stainless steel muzzle brake. There is no optic, sling, or case included, which is standard for most factory AR-platform rifles but a point of budgeting awareness. The muzzle brake is functional but aggressive; I recommend budgeting for a thread protector or a quality muzzle device like a linear comp or suppressor mount if you plan to use it near other shooters, as the side-blast is pronounced.
Is the Great Lakes GL10243SSBLK worth it at $968?
At $968, this rifle offers excellent value for the shooter who specifically needs a .243 Winchester-chambered AR-10 for its blend of flat-shooting performance and semi-automatic function. The cost of sourcing and assembling a similar rifle from stripped receivers with a quality 24-inch stainless barrel and billet receivers would easily exceed $1,300. The value proposition erodes if you do not need the specific cartridge or barrel length; a more common AR-10 in .308 Winchester with a 20-inch barrel will be more affordable to feed and offers greater ammunition compatibility. For the right user, it's a purpose-built tool, not a generalist rifle.
Key attributes
| upc | 638457792546 |
| manufacturer | Great Lakes |
| manufacturer part number | GL10243SSBLK |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 24" |
| caliber/gauge | .243 Winchester |
| capacity | 5 + 1 |
| color | BI-TONE |
| length | 41.8000 |
| safety | Thumb |
| shipping weight | 11.5 |
| sights | No |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
Frequently asked questions
- Is the barrel threaded for a suppressor?
- Yes, the 24-inch stainless barrel has a standard 5/8x24 thread pattern under the factory muzzle brake, which is the correct thread pitch for .30 caliber and many .243 Winchester suppressors. You must time and properly torque any muzzle device using crush washers or a precision shoulder mount. Always verify thread concentricity with an alignment rod before attaching a suppressor to avoid a baffle strike.
- Does this rifle accept standard AR-10 / LR-308 magazines?
- Yes, it is compatible with standard DPMS-pattern .308 Winchester / 7.62x51 NATO magazines, which are widely available from manufacturers like Magpul and Lancer. The included 5-round magazine is for hunting regulations, but you can use 10, 20, or 25-round magazines for range use. Note that .243 Winchester-specific magazines are not required; it feeds reliably from standard .308 mags.
- What is the twist rate and what bullet weights will it stabilize?
- The barrel has a 1:8 twist rate. This is an optimal, fast twist for the .243 Winchester that will reliably stabilize longer, heavier bullets for long-range target shooting. It can effectively handle bullet weights from 55-grain varmint loads all the way up to specialized 115-grain match projectiles, giving you tremendous load flexibility compared to the more common 1:10 twist found on many .243 bolt actions.
- How long does standard ground shipping take?
- All firearms must ship to a Federal Firearms License (FFL) holder. Once your order and FFL information are verified by Ironclad Armory's compliance team, standard ground shipping via FedEx typically takes 3-5 business days for delivery to your selected dealer. You must then complete the Form 4473 background check with that dealer before taking possession.