Quick view Add to Wishlist ZAVIAR Firearms Zaviar Firearms 5.56 'Operator Series' 16" Government Complete Rifle / 1:8 Twist / 10" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Assembled Upper Receiver Charging Handle Bolt Carrier... MSRP: $699.99 $549.99 Choose Options Compare