Grunt(TM) 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(TM) Lower Receiver (MIL-SPEC): CNC machined from a 7075-T6 aluminum forging for extreme precision and enhanced durability. Laser engraved markings including Lead Star(TM) logo and multi-caliber.10" and 11" Grunt(TM) Handguard: CNC machined from 6061-T6 aluminum for extreme precision and enhanced durability. Eliminates harmonics from attached accessories greatly improving weapon accuracy. Four Picatinny slots at the 12 o’clock position for mounting backup 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.Barrel: 10.5"" 4150V 5.56 NATO chamber. 1:7 Twist or 10.5" 4150V 223 Wylde chamber 1:8 twist both with 1/2""-28 muzzle device threads. 300 BO is 1:8 twist 5/8 x 24 thread sizeGas Block: Micro-style steel with black nitride QPQ finish for lightweight and increased durability.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. Gas System: Direct impingement with carbine length gas system to reduce recoil and minimize wear on moving parts.Muzzle Device: Ravage(TM) 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 an enhanced experience for shooters and bystanders. 300 BO comes with A2 Flash Hider.Grip: Grunt Combat(TM) Grip. Black with rubber over-mold for maximum comfort and weapon control in all conditions.Brace: SB Tactical SBA3 Adjustable Brace, BlackMagazine: Comes standard with 1 MagpulA(R) 30 Round MOEA(R) PMAGA(R) black magazine.
