LanTac Enhanced Side Charger Bolt Carrier Group Features The LanTac Enhanced Side Charger Bolt Carrier Group pairs an 8620 steel carrier with an MPI tested Carpenter 158 or 9310 bolt both heat treated and hard turned and ground for consistent reliable function. QPQ nitride treatment gives the entire group a durable black finish that resists corrosion and wear far better than standard phosphate coatings. Forward porting and enlarged vents improve gas flow through the carrier while a balanced flared boss helps manage that gas more efficiently during the cycling process. These features work together to keep the action running smoothly across extended range sessions. A CP-R360 domed cam pin mil-spec gas rings and a mil-spec staked gas key round out the critical wear components of the group all built to standard specifications for reliable interchangeability. Grade 8 hardened fasteners secure the gas key and all hard chrome surfaces meet MIL-STD-171 standards for durability. At 11.7 ounces excluding the handle the BCG s M16 full-auto style carrier adds mass and improves lock time compared to a standard semi-auto carrier. The LanTac Enhanced Side Charger Bolt Carrier Group gives AR builders a rugged side-charging upgrade built to withstand demanding use. LanTac Enhanced Side Charger Bolt Carrier Group Specifications Manufacturer: LanTac Model: Enhanced Side Charger Bolt Carrier Group Type: Bolt Carrier Group Color: Black Finish: Nitride Carrier Material: 8620 Steel Bolt Material: Carpenter 158 / 9310 Weight: 11.7 oz Caliber: 5.56 Available At: GrabAGun