semi-monolithic

  1. Vynz

    Monolithic, Semi-Monolithic, Monoforged, Enhnaced, etc. Uppers

    There are so many different names for these uppers but the common shared feature is these do not have the standard external threading for a barrel nut upon which a handguard would attach. In the LMT case the upper and handguard are one piece; for the others the front of the receiver extrudes...