APF 6.5 Grendel Nitride Bolt Carrier Group Black. 5 Grendel Nitride Bolt Carrier Group. Established working with some of the most durable and long lasting resources around these Bolt Carrier Groups through APF can provide an item which will give years of consistency. APF has been developing high quality products for a very long time and the APF 6.5 Grendel Nitride Bolt Carrier Group is their approach to showing you exactly how much they are concerned. Here at OpticsPlanet we make it our obligation to purchase the most suitable solution for your specifications and presenting the APF 6.5 Grendel Nitride Bolt Carrier Group is one thing that we're delighted to offer. Specifications for APF 6.5 Grendel Nitride Bolt Carrier Group: Manufacturer: APF Color: Black Finish: Nitride Fabric/Material: Steel Caliber: 6.5mm Grendel Package Contents: APF 6.5 Grendel Nitride Bolt Carrier Group APF RPUP7996.5: 6.5 Grendel Nitride Bolt Carrier Group Black