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AR15.COM
3/15/2015 3:02:56 PM EDT
Does anyone know if the gas port on the 16" SOCOM barrels is the same as on the 14.5" barrels? Also, are there any other differences between the two barrels other than length?

I would like to purchase a complete rifle and chop the barrel to just under 15" and permanently attach a NT4 FH so I can use my NT4.

If the gas port is different or any other aspects of the barrel are different, I may just pay the $200 tax and SBR the lower. I was just trying to avoid jumping through a bunch of hoops on this one.

Thanks!
3/15/2015 7:13:55 PM EDT
[#1]
I believe the 14.5 has the flats cut for the M203.
3/15/2015 7:44:25 PM EDT
[#2]
Quote History
Quoted:
I believe the 14.5 has the flats cut for the M203.
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I thought the 16" had the flats cut as well? I'll be screwed if that's the case...how the hell am I going to mount my M203?
3/15/2015 10:29:21 PM EDT
[#3]
Quote History
Quoted:


I thought the 16" had the flats cut as well? I'll be screwed if that's the case...how the hell am I going to mount my M203?
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
I believe the 14.5 has the flats cut for the M203.


I thought the 16" had the flats cut as well? I'll be screwed if that's the case...how the hell am I going to mount my M203?


Send it off to ADCO and they will machine the flats when you have the barrel chopped
3/15/2015 11:03:53 PM EDT
[#4]
Or just buy a 14.5" SOCOM barrel and add a spacer to make it 16?

William
3/18/2015 1:01:30 PM EDT
[#5]
A standard M4/M4A1 barrel +crush washer + KAC flash hider = 16".

A KAC is longer then a standard A2, and even the A2 only needs about 1/8". A jam nut fixes that.

Having said that, I have heard/read that the pin can interfere with an actual suppressor.

Adco can do the work.

http://img.photobucket.com/albums/v143/Stottman/Stottman022/IMG_6151.jpg

http://img.photobucket.com/albums/v143/Stottman/Stottman022/IMG_6144.jpg
4/2/2015 7:09:42 PM EDT
[#6]
Yeah... I don't know why Colt calls the 16" a SOCOM barrel. Only the diameters are correct. It's just SOCOM-ish.