14.5 inch or 16.5 inch ???? Size matters and advice needed.

bkelly4790 said:
Yea exactly 600m is pretty much the practical range of a 14.5" AR where it will still have enough velocity to be effective.
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Effective? You mean accurate or deadly? See I was told my C7A2 section effective range is 400m. Alone even less. I shot it up to 700m. But past 500m, trust me not many guys remain "effective".

I saw many top US army ( USARMY shooting team ) guys shooting 14.5 M4's at 600m... Not so easy it appears... Don't get me wrong here. The ELITE can do it well... But not most guys.
 
Another reason to go at least 16" is that you can't really run a 14.5" barrel in a 15" fore-end. So if the person likes 15" fore-ends, it pretty much dictates at least a 16" barrel.
 
Cpt.Flan said:
Effective? You mean accurate or deadly? See I was told my C7A2 section effective range is 400m. Alone even less. I shot it up to 700m. But past 500m, trust me not many guys remain "effective".

I saw many top US army ( USARMY shooting team ) guys shooting 14.5 M4's at 600m... Not so easy it appears... Don't get me wrong here. The ELITE can do it well... But not most guys.
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So US Army says for a M4 with M855 the max effective range on a point target is 500m but you can bump that out to almost 700m with a decent free floated rifle with decent magnified optic shooting decent ammo with a pretty squared away shooter without much difficulty. Ive shot my own mini Mk12 Clone with a 14.5" with a 4-16 NF ATACR out to 900m it wasn't easy but it's not anywhere close to impossible. I've been to a class with Buck Doyle (Follow Through Consulting) that takes 16" 5.56s out to 1200m. When you aren't limited to M855 or M193 and you step up to 75-80 grain high BC bullets like the Bergers and TMKs you can get some pretty impressive performance that used to be the territory of .30 cal guns.
 
sky52 said:
"in a carbine setup", you just put the word rifle in there. Now i am confused......
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In a 16" AR15, there are at least four gas port positions available. The longer ones being intermediate and rifle length gas port position. That's what I'm referring to. Calling an AR15 a "carbine" is entirely vague and doesn't specify anything.
 
Cpt.Flan said:
Effective? You mean accurate or deadly? See I was told my C7A2 section effective range is 400m. Alone even less. I shot it up to 700m. But past 500m, trust me not many guys remain "effective".

I saw many top US army ( USARMY shooting team ) guys shooting 14.5 M4's at 600m... Not so easy it appears... Don't get me wrong here. The ELITE can do it well... But not most guys.
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put an acog on there and you can definetely hit a man size target at 600 yards
 
adamg said:
In a 16" AR15, there are at least four gas port positions available. The longer ones being intermediate and rifle length gas port position. That's what I'm referring to. Calling an AR15 a "carbine" is entirely vague and doesn't specify anything.
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Find me a 16" rifle gas........hence why i said carbine setup coz OP asked 14.5 or 16.
 
Kidd X said:
That's the first I've ever seen and definitely not the norm. To be fair the Voodoo is a 16.5" ;)
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It was a pretty big thing for a while in 3 gun at least in my region back home. You can run them with adjustable gas blocks and tune it to your loads or lot of ammo you are going to shoot for a match and get an extremely soft and flat shooting gun that isn't a pain in the behind to run through barricades, windows, cars etc.. I'm pretty sure there is even a Colt Competition rifle with a 16" Rifle gas setup from factory or at least once was.
 
Dietz said:
The dissipator has a low-profile mid or carbine gas system with a FSB at the rifle position for longer sight radius and hand placement.
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True dissipators had rifle gas systems with 16" barrels , and IIRC at the time they had some reliability issues because of the gas port size , that was the reason for using shorter proven gas systems and a second FSB at the end .
Back in the Day , good ideal , when we only used irons , longer sight radius , today , not so much with all the optic to chose from.

Dietz said:
The dissipator has a low-profile mid or carbine gas system with a FSB at the rifle position for longer sight radius and hand placement.
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14.5" with mid length gas. If he wants to bring it to the USA pin and weld the flash hider and call it a 16.25".
I have a Noveske Afghan with the above specs which I bring to the USA.

 
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bkelly4790 said:
Go 14.5" and if you ever want to take it to the US you can pin and weld or silver solder on a muzzle device to bring it up to 16". A lot of the common muzzle brakes and flash hiders are 1.5" or more so with a 16" gun with a brake or flash hider on it it's closer to 18"+ actual length.
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Kidd X said:
Flash hiders are not part of the barrel length in Canada. Your registration will still indicate a barrel length less than 16" when crossing the border.
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Yes but nobody gives a crap about barrel length on a restricted rifle in Canada.
My Noveske AR is registered as a receiver only yet on my form 6NIA I have it as a 16-1/4" barrel (14.5" pinned and welded).
I have multiple uppers so it never stays the same.
 
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