Desert Tech HTI Bolt Assembly .416 Barrett/ .50 BMG Black. Caliber conversions for the HTI take sixty seconds and use the same HTI chassis with its free floated barrels and patented return-to-zero barrel mounting system. Specifications for Desert Tech HTI Bolt Assembly: Manufacturer: Desert Tech Condition: New Color: Black Quantity: 1 Gun Model: Desert Tech HTI Gun Make: Desert Tech Package Contents: Desert Tech HTI Bolt Assembly What firearm models does the manufacturer say Desert Tech HTI Bolt Assembly is compatible with? The manufacturer says that Desert Tech HTI Bolt Assembly is compatible with Desert Tech HTIDesert Tech HTI-BL-B: HTI Bolt Assembly .416 Barrett/ .50 BMG Black