Alexander Arms launched their trademark in the name of “six.5mm Grendel” as Section of the requirements for SAAMI standardization. That extended barrel, like another PSA choices, has free-floating rails, and the handguard features you a lot of Picatinny rail Area to mount virtually any optics or accessories you may want. https://bookmarkmargin.com/story12543050/6-5-grendel-secrets