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Armalite AR-10 DEF10


Out of stock


The AR-10® DEF10 is legendary Armalite quality in a streamlined platform. The Defensive Sporting Rifle is a high-quality, no-frills rifle well suited for duty, sport, or defense. The DEF10 uses a double-lapped, chrome-lined/chrome moly barrel for extreme durability and accuracy. A 20-round Magpul PMAG is included.


  • Product Line
  • Product Category
    Defensive Sporting Rifle
  • Caliber
    .308 Win | 7.62×51
  • Barrel
    HB, Double Lapped, Chrome Lined/Chrome Moly
  • Barrel Length
  • Gas System
    Carbine Length
  • Twist Rate
    1:11.25 RH
  • Muzzle Device
    Flash Suppressor
  • Front Sight Base
    MIL-STD 1913 Rail Gas Block (.398″ +/-.010″ Lower Than Top of Receiver)
  • Handguard
    Standard 8″
  • Stock
    6-Position Collapsible
  • Upper Receiver
    Forged Flat-Top with MIL-STD 1913 Rail, 7075-T6 Aluminum
  • Lower Receiver
    Forged 7075-T6 Aluminum
  • Safety
  • Trigger
    Single Stage
  • Charging Handle
  • FInish
    Hard Anodized Aluminum, Manganese Phosphated Steel
  • Overall Length
    35″ Collapsed | 38.3″ Extended
  • Weight
  • Included
    One 20-Round Magpul PMAG, Owner’s Manual
  • Warranty
    Limited Lifetime Warranty

Caliber: 7.62X51 mm / .308

Rifling Twist: 1:11.25” RH

Muzzle Device: Flash suppressor

Upper Receiver: Forged flat-top with MIL-STD 1913 rail, 7075-T6 aluminum

Lower Receiver: 7075-T6 aluminum (forged)

Trigger: Single-stage

Finish: Anodized aluminum upper/lower receiver, manganese phosphated  steel barrel

Overall Length: 35.0″ / 38.3″

Weight: 7.9 lbs.