Description
Great Lakes Firearms has been quietly building a reputation out of Michigan for putting real barrel quality into rifles that regular folks can afford, and the GL10308SSBLK is a solid example of why. This is a full-size AR-10 pattern rifle chambered in .308 Win that also runs 7.62 NATO, built on billet 7075 aluminum upper and lower receivers instead of the cast or forged parts you see at this end of the market. The whole rifle wears a black Cerakote finish applied in-house, and GLFA is a certified applicator, so the coating looks and holds up more like custom work than factory spray.
The Barrel Is Where This GLFA AR-10 Earns Its Keep
The 18 inch 416R stainless barrel is the centerpiece here. It features 5R rifling with a 1:10 twist that stabilizes the bullet weights most .308 shooters run, and each barrel is double thermally stress relieved and air gauged before it leaves the shop. That is the kind of barrel treatment you normally read about on precision builds. The rifle-length gas system paired with a .750 gas block keeps the cycle soft for a .308, and the 5/8×24 threaded muzzle comes fitted with a ported compensator to tame muzzle rise. A 15.25 inch 6061 aluminum M-LOK handguard gives you plenty of real estate for a bipod, light, or sling mount, with a Picatinny top rail ready for the optic of your choice since it ships without sights.
Where the Great Lakes GL10308SSBLK Fits
At 8.25 pounds with a 6-position adjustable stock and mil-spec trigger breaking between 5.5 and 6 pounds, this rifle is right at home in a deer blind, on a bench chasing groups, or knocking down steel at distance. The .308 cartridge gives you the reach and punch for elk, black bear, and hogs, and the low recoil of the gas gun platform makes follow-up shots quick. It ships with one 10-round magazine, so add glass and ammo and you are ready to zero.
Key Specifications
- Manufacturer Part Number: GL10308SSBLK
- UPC: 638457791556
- Caliber: .308 Win / 7.62 NATO
- Action: Semi-Automatic, Direct Impingement
- Barrel: 18" 416R Stainless Steel, 5R Rifling
- Twist Rate: 1:10"
- Muzzle Thread: 5/8"-24 TPI with Ported Compensator
- Gas System: Rifle-Length, .750 Gas Block
- Receivers: Billet 7075 Aluminum, Black Cerakote
- Handguard: 15.25" 6061 Aluminum M-LOK
- Stock: Mil-Spec 6-Position Adjustable
- Trigger: Mil-Spec, 5.5 to 6 lb Pull
- Capacity: 10+1
- Overall Length: 41.75"
- Weight: 8.25 lbs
- Sights: None, Optics Ready Picatinny Rail
What’s Included
- Great Lakes GL10308SSBLK rifle
- One 10-round detachable magazine
Frequently Asked Questions
Does the Great Lakes GL10308SSBLK come with sights or an optic?
No, this rifle ships optics ready with no iron sights installed. The flat top receiver and handguard carry a Picatinny rail, so mounting a scope, red dot, or LPVO is straightforward. Most owners pair the 18 inch .308 barrel with magnified glass to take advantage of its reach.
Can I shoot 7.62 NATO through this GLFA AR-10?
Yes, this rifle is chambered for .308 Winchester and handles 7.62×51 NATO as well. That gives you a wide range of affordable surplus and match ammo to choose from. The 1:10 twist stabilizes the common 147 to 175 grain bullet weights nicely.
Is the Great Lakes AR-10 accurate enough for hunting and longer range work?
The barrel work is the standout on this rifle. The 18 inch 416R stainless barrel has 5R rifling, is double thermally stress relieved, and air gauged, which are steps usually reserved for precision builds. With quality ammo and decent glass, it is well suited for deer, hogs, and ringing steel well past typical hunting distances.
Will the GL10308SSBLK accept a suppressor or different muzzle device?
Yes, the muzzle is threaded 5/8×24, which is the standard pattern for .30 caliber devices. The factory ported compensator is hand tightened without thread locker, so swapping to a suppressor mount or different brake is a simple job. The rifle-length gas system also tends to run smoothly when suppressed.




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