5.56 FEATURES & SPECS: - CALIBER: 5.56 NATO - CLEAR HARD COAT ANODIZED 7075 ALUMINUM RECEIVERS (shades of tan may vary) - FREE FLOATING 6061 ALUMINUM M-LOK HANDGUARD (shades of gray (grey?) may vary) - 70� SAFETY SELECTOR - 2-POSITION COLLAPSIBLE PDW STOCK - ADJUSTABLE LOW-PROFILE GAS BLOCK - MUZZLE: 1/2-28 THREADS TAPERED MUZZLE - TRIGGER: 2-STAGE - AR CONTROLS - SHORT BARRELED RIFLE - WEIGHT: 4 lbs 9 oz - LENGTH: 21.7 IN-26.3 IN - BARREL: 9.69 IN 1:5 TWIST - HANDGUARD: 9 INCH M-LOK - MUZZLE: 2 PC FLASH HIDER