Of the many industrial .308 Winchester loads, number of, if any, are created for barrels shorter than 16". The one which follows helps handle this gap although remaining uncomplicated to suppress and light-weight within the wrists. The barrel is supported by a dual recoil-spring assembly harking back to the Gen4 https://glock-with-a-switch56665.wikibyby.com/1631771/getting_my_glock_switch_for_sale_to_work