Great Lakes GL10 AR-10 .300 Win Mag 24″ 5rd Black/SS
About this product
The Great Lakes GL10 AR-10 is a semi-automatic, long-action rifle chambered in .300 Winchester Magnum designed for precision long-range shooting. Built on billet aluminum receivers with a 24-inch stainless steel barrel, this platform bridges the gap between traditional bolt-action magnum rifles and modern tactical platforms. At $1,199, it offers entry into the magnum AR-10 market with specifications that prioritize barrel life and suppressor compatibility.
What is the GL10 AR-10 used for?
The GL10 is engineered for long-range target shooting and medium-to-large game hunting where distances exceed 500 yards. The 24-inch barrel maximizes .300 Win Mag velocity for flatter trajectories, while the semi-automatic action allows for faster follow-up shots than bolt guns. With a 5-round magazine capacity and rifle-length gas system, it's suited for deliberate shooting rather than rapid fire.
How does the GL10 compare to the Stevens 334 in .308 Win?
The GL10 delivers approximately 400-500 fps more muzzle velocity than the Stevens 334 in .308 Win, making it better for elk or moose beyond 400 yards. However, the Stevens 334 costs about $500 less and weighs nearly 2 pounds lighter at 7.5 pounds, making it more practical for stalk hunting. The GL10's semi-auto operation provides quicker second shots, but at the cost of increased recoil impulse and ammunition expense.
What does it weigh and what are the dimensions?
This rifle weighs 9.8 pounds unloaded and measures 44.5 inches in overall length. The 24-inch barrel contributes significantly to both the weight and length, while the 20-inch handguard provides ample rail space for bipods and night vision. The balance point sits 3 inches forward of the magazine well, favoring a supported shooting position.
Who is this NOT for?
This rifle isn't for budget-conscious shooters or those wanting a lightweight hunting rifle. The .300 Win Mag ammunition costs $2.50-$4 per round versus $0.80 for .308, and the 9.8-pound weight makes it cumbersome for mountain hunting. New shooters should consider starting with a Stevens 334 in .243 Win before stepping up to magnum recoil and expense.
What's in the box?
The rifle ships with one 5-round GLFA magazine, a muzzle brake installed, and basic safety documentation. Unlike some competitors, it does not include iron sights, optics, or a case, adding $200-$500 to the true cost of getting it range-ready. The threaded barrel (5/8-24) accepts standard .30 caliber muzzle devices without adapters.
Is the GL10 worth it at $1,199?
At $1,199, the GL10 is competitively priced for a billet AR-10 in a magnum chambering, costing about $300 less than similar offerings from Daniel Defense or LWRC. The investment makes sense if you need semi-auto capability for long-range hunting or competition where .308 Winchester falls short. For most hunters inside 400 yards, a bolt-action .308 provides better value and lighter carry weight.
Specs at a glance
Video review
Pros & cons
What works
- 24-inch stainless barrel with 5R rifling extends accuracy life to approximately 8,000 rounds before notable degradation
- Billet 7075 aluminum receivers provide rigid platform that maintains zero better than forged receivers under thermal stress
- 5/8-24 muzzle threads accept suppressors without adapter sleeves, saving 2-3 ounces of unnecessary weight
- Rifle-length gas system reduces felt recoil by 15-20% compared to mid-length systems in magnum cartridges
Trade-offs
- Proprietary magazines cost $45 versus $15 for PMAGs and have limited aftermarket availability
- No included optics mounting solution requires $75-$200 additional investment for rail or rings
- Fixed Hogue stock lacks cheek riser adjustment, limiting precision shooter compatibility without $150-$300 upgrade
- 9.8-pound weight makes off-hand shooting impractical for more than 2-3 shots without support
Expert review
Key attributes
| upc | 638457792805 |
| manufacturer | 10 Ring Marketing / WRJ |
| manufacturer part number | GL10LA300SS BLK |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 24 |
| caliber/gauge | .300 Winchester Magnum |
| capacity | 5 |
| color | Black |
| length | 41.9500 |
| safety | Thumb |
| shipping weight | 12.0 |
| sights | No |
| thread pattern | 5/8"-24 |
Frequently asked questions
- Is it compatible with standard AR-10 magazines?
- No, it uses proprietary GLFA magazines due to the .300 Win Mag's longer cartridge length. Standard .308 PMAGs will not seat properly. You'll need to purchase additional magazines directly from Great Lakes or authorized dealers at approximately $45 each.
- Does the barrel accept suppressors?
- Yes, the 5/8-24 threaded muzzle accommodates most .30 caliber suppressors like the SilencerCo Omega 300 or Dead Air Nomad. The rifle-length gas system may require an adjustable gas block for optimal suppressed cycling, which adds $90-$150 if not included.
- How long is the warranty period?
- Great Lakes Firearms provides a limited lifetime warranty to the original owner, covering manufacturer defects but not normal wear or cosmetic issues. Claims must be processed through an authorized dealer, with typical turnaround of 2-3 weeks for repair or replacement.
- Can the stock be replaced with an adjustable model?
- Yes, the buffer tube accepts mil-spec stocks, but the rifle-length buffer system may require specific weights for reliable cycling with .300 Win Mag. Swapping the fixed Hogue stock for a Magpul PRS adds 1.2 pounds but improves cheek weld for precision work.