Great Lakes Firearms AR-10 .308 Win 18" ODG/SS 10-Round Tactical Rifle

The Great Lakes Firearms AR-10 .308 Win is a semi-automatic rifle built for hunters and precision shooters who demand reliability and accuracy in a modern platform. This 18" tactical rifle pairs a billet upper and lower receiver machined from 7075 aluminum with a free-floating 416R stainless steel barrel featuring 5R rifling, double stress-relieved and air-gauged for consistent performance. The Olive Drab Green Cerakote finish and stainless steel components give it a clean, professional look while standing up to field use and harsh conditions.

Whether you're hunting big game, working steel at distance, or running precision rifle competitions, this .308 Win delivers the accuracy and handling shooters expect from a purpose-built AR-platform rifle. The 18" barrel keeps the overall package manageable while the rifle-length gas system and mil-spec trigger provide familiar controls and predictable operation. The 15.25" M-LOK rail in 6061 aluminum gives you plenty of real estate to mount optics, lights, or other accessories without excessive weight.

Great Lakes Firearms includes a single 10-round magazine and has set up the rifle with a mil-spec adjustable buttstock, polymer grip, and muzzle device with six-degree forward taper—all hand-fitted without Loctite for reliable, field-serviceable assembly. The 0.750" gas block and rifle-length gas tube round out a sensible, combat-proven design that works as delivered or serves as a solid platform for further customization.

Key Features

• Billet 7075 aluminum upper and lower receiver for strength and precision
• Free-floating 416R stainless steel barrel with 5R rifling and 1/10" twist rate
• Double and thermally stress-relieved, air-gauged barrel for accuracy and durability
• 15.25" M-LOK handguard for mounting optics, lights, and accessories
• Rifle-length gas system with 0.750" gas block
• Olive Drab Green Cerakote finish over stainless steel
• Mil-spec adjustable buttstock and polymer grip
• Mil-spec trigger with 5.5–6 lb pull
• 5/8x24 threaded muzzle device with six-degree forward taper
• Includes single 10-round magazine

Specifications

Frequently Asked Questions

What is the Great Lakes Firearms AR-10 .308 Win best used for?

This rifle is suitable for hunting medium to large game, long-range target shooting, precision rifle competitions including metallic silhouette and Palma disciplines, and general range use. The .308 Winchester cartridge and 18" barrel make it practical for field carry while maintaining effective velocity and accuracy at extended distances.

Is the barrel free-floating, and what does that mean for accuracy?

Yes, the barrel is free-floating and has been double stress-relieved and air-gauged by the manufacturer. A free-floating barrel isolates it from contact with the handguard, which reduces vibration and helps produce more consistent shot placement, particularly important for precision shooting and longer-range work.

What's included with this rifle, and what will I need to add?

The rifle comes with one 10-round magazine, an adjustable buttstock, grip, muzzle device, and all standard controls. You'll want to add an optic or iron sights; the 15.25" M-LOK handguard provides ample space to mount a scope, red dot, or other aiming system.

Can I customize or upgrade this rifle?

Yes. The billet receiver, M-LOK handguard, and standard AR-10 platform make it straightforward to swap components such as the trigger, handguard, stock, or muzzle device. The hand-fitted muzzle device uses no Loctite, making it field-serviceable for future adjustments or changes.