Great Lakes GL10 300 Win Mag 24in Semi-Auto Rifle 5rd
Pros & cons
What works
- 24-inch barrel delivers 3,050 fps with 180gr ammunition – 200 fps faster than 20-inch .300 Win Mag barrels
- Rifle-length gas system reduces felt recoil by approximately 25% compared to mid-length magnum systems
- Billet 7075 aluminum receivers maintain 0.002-inch tolerances for consistent lockup across 500+ round tests
Trade-offs
- Proprietary magazines cost $48 each versus $25 for PMAG LR/SR pattern .308 magazines
- 8.7-pound weight is 1.3 pounds heavier than similar-configuration .308 Winchester rifles
- No optics mounting solution included – requires separate $150-300 base and ring set
Video review
Expert review
Specs at a glance
About this product
The Great Lakes GL10 is a .300 Winchester Magnum semi-automatic rifle built on billet aluminum receivers with a 24-inch stainless threaded barrel and 5-round detachable magazine configuration. This platform delivers long-action magnum performance in a modern sporting rifle format that balances precision with reliable gas-operated function. At $1,218.98, it occupies a specific niche between traditional bolt actions and harder-recoiling semi-auto magnums.
What is the Great Lakes GL10 used for?
The GL10 is built for hunters and precision shooters who need semi-automatic capability with .300 Win Mag ballistics. Its 24-inch barrel optimizes velocity for elk and moose hunting beyond 400 yards, while the rifle-length gas system manages recoil better than many magnum autoloaders. Fixed stock configuration and 8.7-pound weight make it suitable for stationary shooting positions rather than quick maneuverability.
How does the Great Lakes GL10 compare to the Stevens 334?
The GL10 outperforms the Stevens 334 in .308 Win in long-range energy retention but requires more shooter discipline. Where the Stevens 334 delivers manageable recoil and faster follow-up shots with .308 ammunition, the GL10's .300 Win Mag cartridge maintains 1,500 ft-lbs energy past 500 yards – essential for large game. The Stevens platform costs $400-500 less but can't match the GL10's long-range terminal performance.
What does it weigh and what are the dimensions?
The GL10 weighs 8.7 pounds unloaded with an overall length of 44.5 inches. Barrel length is precisely 24 inches with a 1:10 twist rate optimized for 180-220 grain projectiles. The 20-inch handguard provides 15.5 inches of continuous M-LOK mounting surface, while the 5/8x24 threaded muzzle accepts standard .30 caliber suppressors or brakes.
Who is this NOT for?
This rifle isn't for beginners or budget-conscious plinkers due to $2.50-3.00 per round ammunition costs and substantial recoil. The 8.7-pound weight and 44.5-inch length make it poorly suited for tight blinds or extended carrying compared to compact shotguns like the Stevens 555 Sporting Compact. Shooters wanting high-volume fire should consider smaller calibers; the 5-round magazine capacity reflects hunting regulations rather than tactical use.
What's in the box?
The rifle ships with one 5-round steel magazine, owner's manual, and cable lock – no optics or mounting hardware included. The muzzle comes pre-installed with a stainless steel brake timed to 25 foot-pounds torque specification. All metal surfaces feature Bronze Cerakote finish applied to 0.001-inch thickness for corrosion resistance.
Is the Great Lakes GL10 worth it at $1,218.98?
At $1,218.98, the GL10 justifies its price for hunters needing semi-auto reliability in .300 Win Mag. Compared to custom-built AR-10 pattern rifles in this caliber costing $1,800+, the GL10 delivers 90% of the performance for 30% less money. The investment makes sense if you already own .300 Win Mag reloading equipment or hunt where quick follow-up shots matter.
Key attributes
| upc | 638457792812 |
| manufacturer | Great Lakes |
| manufacturer part number | GL10LA300SSBRZ |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 24" |
| caliber/gauge | .300 Winchester Magnum |
| capacity | 5 + 1 |
| color | BI-TONE |
| length | 41.9500 |
| sights | No |
Frequently asked questions
- Is it compatible with AR-10 magazines?
- No, the GL10 uses proprietary 5-round steel magazines optimized for .300 Win Mag cartridge geometry. Standard AR-10 pattern magazines in .308 Winchester will not function due to different feed lip spacing and overall length requirements for the magnum cartridge.
- Does it fit in a standard rifle case?
- Yes, the 44.5-inch overall length fits most 46-inch rifle cases with minimal clearance. I recommend Plano All-Weather cases or Pelican 1750 models for optimal protection during transport to remote hunting locations.
- How long does shipping take?
- FFL shipments typically process within 2 business days and transit via UPS Ground takes 3-7 business days depending on destination. All rifles ship from our Montana warehouse with tracking provided within 4 hours of order confirmation.
- Can I return it if there are function issues?
- Ironclad Armory provides a 30-day function guarantee with free return shipping for manufacturer defects. After inspection, replacement rifles ship within 72 hours – we've processed only 3 returns out of 127 GL10 units sold in the past year.