The ArmaLite AR-10 DEF10 .308 Win 16" tactical rifle brings legendary ArmaLite engineering to a no-nonsense platform built for duty, sport, and defensive use. Chambered in .308 Winchester (7.62×51mm NATO), this semi-automatic rifle combines a compact 16-inch barrel with a 6-position collapsible stock to deliver a maneuverable package that doesn't compromise on firepower. At 7.9 pounds fully assembled, it strikes a practical balance between portability and shootability—ideal for hunters working dense terrain, tactical sport competitors, and shooters who value a modern rifle that does the job without excess.

Built on proven AR-platform ergonomics, the DEF10 features a forged flat-top upper receiver with MIL-STD 1913 rail for mounting optics and accessories. The rifle ships with a 20-round Magpul PMAG, giving you substantial capacity out of the box. The barrel itself is chrome lined and chrome moly, a combination chosen for extreme durability and consistent accuracy even under sustained fire. With a 1:11.25 twist rate, the barrel will stabilize a wide range of .308 projectiles, from lighter match rounds to heavier hunting loads.

The black hard anodized aluminum upper and manganese phosphated steel lower receiver are finished to resist corrosion and wear—practical details for a rifle that's meant to be used, not just displayed. Overall length ranges from 35 to 38.3 inches depending on stock position, letting you tune the rifle to your frame and shooting style. Whether you're building a precision .308 platform, replacing a service rifle in your safe, or looking for a modern semi-auto in one of America's most versatile cartridges, the ArmaLite DEF10 is a straightforward, field-ready choice.

The ArmaLite AR-10 DEF10 .308 Win 16" tactical rifle brings legendary ArmaLite engineering to a no-nonsense platform built for duty, sport, and defensive use. Chambered in .308 Winchester (7.62×51mm NATO), this semi-automatic rifle combines a compact 16-inch barrel with a 6-position collapsible stock to deliver a maneuverable package that doesn't compromise on firepower. At 7.9 pounds fully assembled, it strikes a practical balance between portability and shootability—ideal for hunters working dense terrain, tactical sport competitors, and shooters who value a modern rifle that does the job without excess.

Built on proven AR-platform ergonomics, the DEF10 features a forged flat-top upper receiver with MIL-STD 1913 rail for mounting optics and accessories. The rifle ships with a 20-round Magpul PMAG, giving you substantial capacity out of the box. The barrel itself is chrome lined and chrome moly, a combination chosen for extreme durability and consistent accuracy even under sustained fire. With a 1:11.25 twist rate, the barrel will stabilize a wide range of .308 projectiles, from lighter match rounds to heavier hunting loads.

The black hard anodized aluminum upper and manganese phosphated steel lower receiver are finished to resist corrosion and wear—practical details for a rifle that's meant to be used, not just displayed. Overall length ranges from 35 to 38.3 inches depending on stock position, letting you tune the rifle to your frame and shooting style. Whether you're building a precision .308 platform, replacing a service rifle in your safe, or looking for a modern semi-auto in one of America's most versatile cartridges, the ArmaLite DEF10 is a straightforward, field-ready choice.