Of the numerous industrial .308 Winchester masses, several, if any, are created for barrels shorter than 16". The one which follows allows tackle this gap while remaining easy to suppress and lightweight about the wrists. The barrel is supported by a dual recoil-spring assembly paying homage to the Gen4 version https://lanelmhdw.plpwiki.com/6940965/the_greatest_guide_to_what_is_a_glock_switch