New in box, A1 Bushmaster caliber 5.56 .223 Remington• barrel 6 position telestock• Semi-auto, gas-operated• M4A1 profile 14.5 " barrel (designed to accept military M203 grenade launcher) w/permanently attached Phantom flash suppressor for overall barrel length of 16 ". Upper and lower receivers are machined from 7075 T6 aircraft aluminum forgings for light weight and added strength. Chrome-lined bore & chamber• A1 upper receiver configuration w/Dual flip-up aperture 300m-800m rear sight (W/E)• Elevation adjustable A2 square front post sight• 1:9 Twist• One Year Bushmaster Warranty• Wt.: 6.22 lbs.• OAL: 34.7 " • Includes: Hard case; 30 round Magazine, operator's manual, orange safety block, black web sling. Need sign copy of FFL. Shipping to lower USA where legal to own. Insurance is included in the cost. Personal checks need to clear my bank before shipping. I'm not set up to accept credit cards, sorry. Please email with any questions.