Platform: AR-15 semi-automatic rifle Caliber: 5.56 NATO / .223 Wylde (some models offer .300 BLK, 6.8 SPC) Barrel length: Most common 16 inches Twist rate: Typically 1:7 or 1:8 Barrel material: Chrome moly vanadium steel (often chrome-lined) Thread pitch: 1/2x28 (standard muzzle devices) Build & construction Receivers: 7075-T6 forged aluminum (mil-spec) Finish: Standard: black anodized OD green version: Cerakote or Magpul OD furniture Handguard: Free-float M-LOK (varies by model) Stock: 6-position adjustable M4 stock Grip: A2 or upgraded polymer grip Operating system Gas system: Direct impingement Carbine or mid-length depending on variant Bolt carrier group: Full-auto rated Chrome-lined / MPI tested (typical spec) Size & weight Weight: ~6.5-7.1 lbs (empty) Overall length: ~32-36 inches (stock adjustable) Standard features A2 flash hider or upgraded muzzle device Free-float rail for accessories Collapsible stock Mil-spec trigger Detachable magazine (usually 30-round standard capacity where legal) What "OD Green" means Refers to color scheme only (often: Magpul OD green furniture, or Cerakote OD green receivers) No difference in performance or specs-purely aesthetic + corrosion protection Gas system (carbine vs mid-length) Handguard style Factory vs custom build Bottom line Type: Mid-tier AR-15 platform Strengths: durability, modularity, solid materials Best use: range, home defense, duty-style rifle setups comes as pictured with a foregrip on side may show signs of previous use none which wuold affect the function of this item,