Black Rain Ordnance has made a promise to make your firearm exactly that YOUR firearm. With the Spec+ Series you have over 100 Different build configurations and 24 different finish options to choose from. If you are looking to add something special to your arsenal without breaking the bank the Black Rain Ordnance Spec+ Series has proven to be a great choice.Specifications: Caliber: 5.56mm Magazine: 30rd Receiver: Spec15 Forged Aluminum Receiver Set Barrel: 16" 4150V Chromoly BCG: Salt Bath Nitride Coated Spec15 BCG Charge Handle: Spec15 Forged Charge Handle Trigger: Mil-Spec G.I. Trigger Gas System: Direct Impingement; .750 Low Profile Non-Adjustable Muzzle Device: A2 Flash Hider Furniture: MFT EPG16 Grip & MFT Minimalist Stock Handguard: 12" MLOK Slim Handguard Length: 34" Weight: 7lbs 3oz