Author Topic: AR-15/M16 barrel dimensions or blueprints???  (Read 9888 times)

Offline ferretface

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AR-15/M16 barrel dimensions or blueprints???
« on: April 16, 2008, 05:28:46 AM »
Does anyone recall seeing a layout drawing, blueprint, or dimensions for any and/or all of the various AR barrels??? I'm looking for the 5.56mm barrels, not the oddballs...   ;D

I'd like to get as many different profile dimensioned drawings as possible...A1, A2, M4, whatever...   ;)

Thankyouverymuch!   ;D

Offline bookwurm99

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Re: AR-15/M16 barrel dimensions or blueprints???
« Reply #1 on: April 17, 2008, 03:20:05 PM »
i don't have any drawings but would suggest checking out the barrel manufacturers first.  if you get any i would like them too.

Offline ferretface

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Re: AR-15/M16 barrel dimensions or blueprints???
« Reply #2 on: April 17, 2008, 03:35:17 PM »
Mfg's...yes and no...   ::)

Shilen has some dimensions, but they're not clear if the dimensions are based on GI M16's or not...

http://www.shilen.com/ar15Barrels.html

Randall also has some profiles on his site...

http://www.ar15barrels.com/profiles.shtml

The best place was the book "The Black Rifle", (vol 1), pg 352...TBR #1 has the A1, HBAR, and A2 dimensions...Not all the dimensions, but pretty close!

I know I've seen the M4 dimensions/layout drawing around somewhere, but I don't recall where...

Offline goober

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Re: AR-15/M16 barrel dimensions or blueprints???
« Reply #3 on: April 19, 2008, 10:30:37 AM »


The best place was the book "The Black Rifle", (vol 1), pg 352...TBR #1 has the A1, HBAR, and A2 dimensions...Not all the dimensions, but pretty close!

I know I've seen the M4 dimensions/layout drawing around somewhere, but I don't recall where...

ooops, was gonna suggest that or scan the page for you...
as for the M4, i seem to remember seeing a dim'ed drawing somewhere too, but can't recall where...
TBR #2 has drawings on p. 72 but no dims... p. 73 has some minimal specs:
length 14.5"
std M16A2 5.56mm chamber, chrome lined, barrel also chromed
std M16A2 button-rifled barrel w/ 6 lands & grooves, 1 in 7 RH twist
std carbine barrel gas port location
gas port diam 0.0625"

the diam of the barrel from the front sight fwd is the same as on the M16A2, except for the groove for mounting the M203, which is the same as the M16A1
let me know if you want me to scan vol 2 p72 for the drawings.
heatware username: goober

Offline bookwurm99

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Re: AR-15/M16 barrel dimensions or blueprints???
« Reply #4 on: April 19, 2008, 03:02:27 PM »
just had a thought.  scan the page and then i can import the pic into auto cad, scale it to life size in autocad using the length and measure.  not sure how close it will be but better than nothing. i could also make it into an iges so that you can open it with about anything. could also do it with pictures.  let me know if you want me to do it.

EDIT: added area in bold
« Last Edit: April 28, 2008, 07:59:40 PM by bookwurm99 »

Offline ferretface

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Re: AR-15/M16 barrel dimensions or blueprints???
« Reply #5 on: May 02, 2008, 06:58:03 AM »
Thank You, bookwurm99!!! I appreciate it!!!   ;D ;)

I cut a Colt Match Target HBAR in half, and will be using each half to make up a SBR. I finished mounting the second barrel extension this morning, and will be chambering it in a day or so...as soon as I can find my high-sulphur cutting oil can...It seems to have grown legs...   >:(



In the meantime, I'll be contouring the exteriors...I tell ya, that phosphate coating is some hard sh*t to turn off on the lathe...   :P
« Last Edit: May 03, 2008, 12:32:30 PM by ferretface »

Offline bookwurm99

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Re: AR-15/M16 barrel dimensions or blueprints???
« Reply #6 on: May 05, 2008, 09:15:21 AM »
i have some dimensioned drawings.  if anybody wants them PM me.

Offline Art-FL

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Re: AR-15/M16 barrel dimensions or blueprints???
« Reply #7 on: September 03, 2008, 08:38:42 AM »
i have some dimensioned drawings.  if anybody wants them PM me.



Bookwurm,

Would you mind sending me the drwaings?

Arthurmorgenthaler@yahoo.com.br