Category: Product ID: 2138



  • Caliber: .223 Rem / 5.56x45mm
  • Operation: Direct impingement
  • Gas System: Carbine Length
  • Gas Block: Micro style steel with black nitride QPQ
  • Fire Control Group: Grunt Combat trigger, Nickel boron coated and polished, MIL-SPEC trigger
  • Pull Weight: Approximately 6 lbs.
  • Upper Receiver Material: 7075-T6 Aluminum, MIL-SPEC
  • Lower Receiver Material: 7075-T6 Aluminum, MIL-SPEC
  • Handguard Length: 11″
  • Handguard Material: 6061-T6
  • Bolt Carrier: M16, Black Nitride QPQ Finish
  • Bolt: Carpenter C-158, Black Nitride QPQ Finish
  • Muzzle Device: Ravage Linear Compensator
  • Barrel Material: 4150V CMV
  • Barrel Finish: Black Nitride QPQ
  • Twist: 1:7
  • Thread Pattern: 1/2″-28
  • Barrel Length: 10.5″
  • Grip: Grunt Combat Grip. Black with rubber over mold
  • Stock: Adjustable Pistol Brace
  • Magazine: (1) Magpul 30 Round MOE PMAG Black Magazine.
  • Weight: 5.3 lbs.
  • Finish: Type III Class 2 MIL-SPEC hard coat anodized, Black or Cerakote (Concrete Grey, FDE, Sniper Green)


The Lead Star Arms ultralight series of duty firearms are equipped with features normally only found on higher priced models. Engineered for best in class performance with our distinctive aesthetics. The Grunt AR-15 Pistol features a 10.5″ barrel with a lightweight 11″ handguard to give a streamlined look. Outfitted with a nickel boron trigger, LSA Ravage Linear Compensator and an Adjustable Pistol brace the Grunt AR-15 Pistol is everything you could want in an AR pistol.


Grunt Upper Receiver (MIL-SPEC): CNC machined from a 7075-T6 aluminum forging for extreme precision and enhanced durability. Flat top Picatinny design for versatility in mounting optics and other enhanced components. M4 feed ramps for added reliability.

Grunt Lower Receiver (MIL-SPEC): CNC machined from a 7075-T6 aluminum forging for extreme precision and enhanced durability. Laser engraved markings including Lead Star logo and multi-caliber.

11″ Grunt Handguard: CNC machined from 6061-T6 aluminum for extreme precision and enhanced durability. The unique design offers ultra-capture around the barrel nut eliminating the requirement for anti-rotation tabs. Eliminates harmonics from attached accessories greatly improving weapon accuracy. Four Picatinny slots at the 12 o’clock position for mounting back up sights. M-LOK slots at the 3 and 9 o’clock positions and full-length M-LOK at the 6 o’clock position for mounting only the Picatinny rail needed or accessories. Designed for compatibility with 10.5″ barrels.

Fire Control Group: Grunt Combat trigger. Nickel boron coated and polished surfaces for an extremely smooth and crisp MIL-SPEC trigger. Includes reduced power trigger and disconnector springs for a perfect lightened duty rifle trigger pull of approximately 6 lb.

Barrel: 10.5 4150V 5.56 NATO chamber with black nitride QPQ finish. 1:7 Twist. 1/2″-28 muzzle device threads.

Bolt Carrier Group: M16 profile with black nitride QPQ finish and properly staked gas key. Carpenter C-158 black nitride QPQ finish bolt for the maximum in dependability. Laser marked with Lead Star logo.

Gas System: Direct impingement with a carbine length gas system to reduce recoil and minimize wear on moving parts. Features black nitride QPQ finish gas tube for reducing signature and increased resistance to heat.

Muzzle Device: Ravage Linear Comp. Greatly mitigates muzzle concussion by effectively capturing and redirecting muzzle gasses away from the shooter. Enhanced design dramatically reduces perceived decibels. Control of muzzle concussion creates enhanced experience for shooters and bystanders.

Grip: Grunt Combat Grip. Black with rubber over mold for maximum comfort and weapon control in all conditions.

Magazine: Comes standard with 1 Magpul 30 Round MOE PMAG black magazine.


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