MONOLITHIC RAIL PLATFORM AND BOLT ASSEMBLIES FOR A FIREARM

摘要

A firearm assembly for a firearm can include a monolithic rail platform (50) with a handguard portion (52) and an upper receiver portion (70). The barrel (22) of the firearm can be positioned through the handguard portion (52) and secured to the upper receiver portion (70). A firearm assembly can also include a bolt assembly with a bolt carrier (120) having minimized land area and a forward end sized for receipt in the barrel extension (28) at the rearward end of the barrel (22).