Buffer tube for modular gunstock

In combination with a stock module, a mounting assembly for a modular gunstock for a firearm comprising:

• a. an elongate mounting assembly base;
• b. an interface on one end of the mounting assembly base for attachment to a firearm receiver;
• c. a uniform cheek plate, disposed towards an uppermost portion of the mounting-assembly base;
• d. two longitudinal grooves, each disposed beneath and on either side of the uniform cheek disposed on an outer surface of the mounting assembly base and the stock module is mounted upon the mounting assembly by way of the two longitudinal grooves in a manner that the uniform cheek plate remains entirely exposed when the stock module slides along the longitudinal grooves.

In combination with a stock module, a modified buffer tube assembly for a modular gunstock for a firearm comprising:

• a. an assembly body, having an outer surface about a cylindrical tube, and an interior of the cylindrical tube defining a hollow buffer region;
• b. an interface adapted to attach the assembly body to a firearm receiver, the buffer region having an opening through the interface;
• c. a uniform cheek plate, disposed towards an uppermost portion of the outer surface of the assembly body;
• d. two longitudinal grooves, each disposed beneath and on either side of the cheek plate in the outer surface of the assembly body, the longitudinal grooves providing a mounting interface for the stock module such that the uniform cheek plate of the assembly body remains entirely exposed after the stock module is slid along the longitudinal grooves of the buffer tube assembly.