US Patent 11015884 Chassis of semiautomatic rifles

A firearm includes a lower receiver defining a trigger well configured to receive an action, a lower forend extending distally from and monolithically formed with the lower receiver, and an upper forend detachably coupled to the lower forend. The lower forend and the upper forend together define a channel therethrough configured for receipt of a barrel of the firearm. The lower receiver is configured to support the barrel with the length of the barrel free-floating within the channel.