AB Arms Pro BCG Nickel Boron Bolt with Phosphate Extractor
AB Arms AB Pro Bolt Assembly is built to Mil-Spec dimensions. The Nickel Boron coated bolt needs virtually no lube during use. The Manganese Phosphate coated extractor has a surface finish that provides superior extraction during firing. These bolt assemblies are ready to drop into your bolt carrier group. These Bolts are specially made on high end Swiss machinery to have exacting tolerances and surface finish.
