Hey everyone who reads this, I'm new to forums and such so bare with me here!
I'm looking to convert my ICS sig 551 into more of an LMG type gun
I have all the external components figured out, I just need help figuring out internals and barrel length for it. mainly barrel length for right now
Is there a noticeable difference between a 509mm 6.03 and a 650mm 6.03?