Description
Great Lakes Firearms has quietly built a solid reputation out of Sparta, Michigan by doing something simple: building AR platforms right and Cerakoting them in-house so every rifle rolls out looking like a custom job. The GL10308TNG is their .308 Winchester AR-10 wearing a Tungsten Gray Cerakote finish over a black nitride barrel, and the two-tone look genuinely stands out in a rack full of plain black rifles.
What Makes the GL10308TNG Worth a Look
The barrel is where this rifle earns its keep. It's an 18 inch 4150 CRMOV tube that's been nitride treated for corrosion resistance and bore longevity, cut with 5R rifling, double and thermally stress relieved, and air gauged for consistency. The 1:10 twist stabilizes the full range of common .308 loads, from lighter 150 grain hunting bullets up to heavier match offerings. Up front you get a 5/8×24 threaded muzzle with a brake installed, fed by a rifle-length gas system that smooths out the recoil impulse noticeably for a .308. Receivers are machined from 7075 billet aluminum, and the 15.125 inch M-LOK handguard gives you plenty of real estate for lights, bipods, and sling mounts.
A .308 AR That Pulls Double Duty
This is the kind of rifle that works just as well in a deer blind as it does on a steel range. The .308 Winchester chambering handles whitetail, elk, hogs, and black bear with room to spare, and the flat top receiver ships without sights so you can run whatever optic suits the job, whether that's a low-power variable for the woods or a magnified scope for reaching out. The mil-spec six-position stock adjusts for different shooters and layers of clothing, and at around 8.25 pounds bare, it carries reasonably well for a big-bore AR.
Getting Started with the Great Lakes .308 AR-10
Each rifle ships with a single 10-round magazine, so you're ready for the range after mounting glass and a quick zero. For a .308 AR at this level, the barrel work and finish quality make it an easy rifle to recommend to hunters and target guys alike.
Key Specifications
- Manufacturer Part Number: GL10308 TNG
- UPC: 638457791624
- Caliber: .308 Winchester / 7.62×51 NATO
- Action: Semi-Auto, Direct Impingement
- Barrel: 18" 4150 CRMOV, Nitride Treated, 5R Rifling
- Twist Rate: 1:10"
- Muzzle: 5/8×24 Threaded with Muzzle Brake
- Gas System: Rifle-Length, 0.750" Gas Block
- Receivers: Billet 7075 Aluminum Upper and Lower
- Handguard: 15.125" M-LOK, 6061 Aluminum
- Stock: Mil-Spec 6-Position Adjustable
- Trigger: Mil-Spec, 5.5-6 lb Pull
- Capacity: 10 Rounds
- Finish: Tungsten Gray Cerakote / Black Nitride Barrel
- Weight: 8.25 lbs
- Sights: None, Optic Ready
What’s Included
- Great Lakes GL10308TNG AR-10 rifle
- One 10-round magazine
Frequently Asked Questions
Is the Great Lakes GL10308TNG a good hunting rifle for deer and elk?
Yes, that's one of its strongest use cases. The .308 Winchester chambering has more than enough energy for whitetail, elk, hogs, and black bear at practical hunting distances, and the muzzle brake plus rifle-length gas system keep recoil softer than you'd expect from a .308. The 18 inch barrel gives you good velocity without making the rifle a chore to carry.
Does the GL10308TNG come with sights or an optic?
No, this rifle ships without sights. The flat top upper and full-length rail on the M-LOK handguard give you plenty of room to mount a scope, red dot, or backup irons. Most owners pair it with a low-power variable optic or a mid-range scope depending on how they plan to use it.
What ammo does the 1:10 twist barrel shoot best?
The 1:10 twist is a versatile choice for .308 and stabilizes just about everything commonly available, from 150 grain hunting loads up through 168 and 175 grain match bullets. It also safely handles 7.62×51 NATO. As with any rifle, it pays to test a few loads to find what your particular barrel prefers.
Where are Great Lakes Firearms rifles made?
Great Lakes Firearms and Ammunition is a family-owned manufacturer based in Sparta, Michigan, and these rifles are made in the USA. They're also a certified Cerakote applicator and do all their finish work in-house, which is why the Tungsten Gray on this model looks more like a custom shop job than a factory rifle.





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