guys i got a 600mm barrle with barrle shroude and the factory shroude the worm nut thats half inch 1/2 20 was stuck had to mod shroude and heat it to get it out what i am needing to know is the length of the 380mm barrle this 600mm i got is 30 cal i going to cut barrle down to 380mm and cut the first shroude down re thread it and use a carbon sleeve over it all the 600mm barrle its self mesures 23 9/15 that is 23.562 in inches and in mm it is 598.487 in mm if any one has the 380 mm barrle from 177 to 30 cal in the dream line i would like to know exzatly what the 380mm mesures out to so i can cut mine to match