<https://www.ar15forums.com/threads/performance-difference-between-different-barrel-lengths.765/>
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"I have been looking at ars both on the cheap side and some nice .308s. I think I am sick and I need at least 2.  I am pretty sure I want one of the budget CMMG rebuilt/factory second or blemish ARs in flat top HBAR 18 or 20 in barrel I could go either way.   Part of my problem is in the weeks I have been researching I am not seeing much talk or comparison of the long barrels versus the shorter barrels.\n\nI have a SKS already for my HD and short range zombie and UN storm trooper killing.  I want to get into some long range plinking and long range SHTF gun wouldnt be bad either.  I have a .45 XD compact and a 12 gauge Remington 870 so I dont think a short barrel ar15 is going to do me much I cant already accomplish with my current inventory.\n\nNow does anyone have any links to some comparisons of different barrel lengths I can review.... its ok if its just rough comparison and not even the same exact models.\n\nOr if anyone has any just purely personal opinion or range observations they would like to submit. Go ahead, ears open.\n\nI am thinking 20 inch but I would go longer if it made a real big difference.\n\nOne last thing I am not overly concerned with the weight, I am a big guy and carry ladders and tools and crap around all day.  I am in good shape and I am 6'4\" 240 something lbs.,   so  a few pounds extra lbs. on a gun isnt going to slow me down much in a SHTF scenario.\n\nAlso everyone seems to want to shorten their ARs but I have yet to see a picture of a AR with a folding stock, I googled and found a manufacturer, are these crap or a bad idea for some reason on the AR, you see them allot on SKS and AKs ?"
<https://www.ar15forums.com/threads/performance-difference-between-different-barrel-lengths.765/>