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Posted: 4/8/2014 3:23:56 PM EDT
Can someone post some pictures or describe to me the differences and how to tell a heavy barrel from a lightweight or government profile. Along with any other barrel profiles I am missing. Thanks 
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Just between you and me OP, there is thing called Google. Keep this quiet now, we don't want the world to know about this new fangled technology! 
https://www.google.com/#q=ar+15+barrel+profiles |
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Quoted:
Just between you and me OP, there is thing called Google. Keep this quiet now, we don't want the world to know about this new fangled technology!
https://www.google.com/#q=ar+15+barrel+profiles Sometimes I wish some of you guys would pull your collective heads out once in a while and help a guy out. Barrel profile chart. It's reasonably accurate. Whatever you do, don't d business with this guy. 
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Barrel contour is best decided upon your end use of the rifle before you build. Know what its going to be used for before you buy the first part.
General use like defense, end of days, light combat duty, light range use, general beater. Use a Government profile, it allows use of all sorts of goodies from rails to launchers. Normal Range Use, fired from bipod or bags, short 100y range work, a medium contour 16" is fine. Target or medium range varmint work up to say 300 yards, go for a medium heavy 18" or 20" barrel with full length gas system. I have not found much use for a 16" heavy profile barrel, why bother going with such a heavy barrel that only just gets a bullet to stabalize if its the right weight. Consider for general use a medium heavy profile 18" SPR style barrel with full length gas system. Use a full length rail or handguard. Use a 223 wylde chamber, 1/8 twist, and toss on some good optics. This gives you a very good overall package for good accuracy, and a stable platform. The idea of using a M4 sized platform for any CQB is just pointless, I only use a handgun for close range CQB work and it serves me well. Most urban engagments (non war time) are within 7 meters, usually 7 feet, not really useful to have a carbine for that. Reserve a rifle or carbine for ranges from 25m to 300m, past that switch to a bolt gun or run. If a target is more than 300m away then you have to decide if its safer to retreat, or advance. To get back to the point, Pick the end use, then decide the barrel, I suggest the wylde chamber since it will shoot just about every bullet weight, and will work ok with either 223 rem, or 5.56 nato. |
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