Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
10137 Online
bravocompany bravocompany bravocompany
brownells brownells
tnvc tnvc tnvc
AR15.COM
bravocompany
My Account
bravocompany bravocompany bravocompany
brownells brownells
tnvc tnvc tnvc
silencerShop
fightlite
magpul
RS
Holosun
aim
GS
springfield
cz
primaryArms
JRH
colt
DFC
bravocompany
palmetto
midwest
vortex
OSIGHT
skd
Guns
brownells
geissele
10137 Online
skd
vortex
bravocompany
magpul
fightlite
silencerShop
primaryArms
colt
JRH
RS
cz
midwest
OSIGHT
springfield
GS
palmetto
aim
DFC
geissele
Guns
brownells
Holosun
AR Sponsor
Site News Could You Have Stopped This? Vegas Shooting Analysis with Attorneys on Retainer
12/2/2013 6:16:49 PM EDT
I have been looking for an AR-15 upper receiver blueprint with MIL-SPEC dimensions and tolerances but have not found anything.  Does anyone know what the MIL-SPEC dimension and tolerance is for the upper receiver bolt-carrier BORE?  

12/2/2013 7:31:02 PM EDT
[#1]
I can't remember for sure, but I think it is 1.00 +- .001. I will look it up tomorrow and let you know. Craig
12/3/2013 2:47:07 PM EDT
[#2]
I found a partial drawing with 1.000 +/- 0.002, but it is uncertain of drawings origins.
12/3/2013 9:03:33 PM EDT
[#3]
1.000 - .0  + .002 is the dim for the bore retaining the barrel extension. The remainder of the bore that houses the carrier is larger. I can get you the dim tomorrow.

I know lots of tomorrows, haha   1.010 comes to mind, but can check for sure for you.
12/4/2013 3:36:02 AM EDT
[#4]
Topic Moved
12/5/2013 5:36:20 PM EDT
[#5]
The MIL-SPEC dimension is 1.000 +/- 0.002 inches.
12/5/2013 7:48:19 PM EDT
[#6]
Quote History
Quoted:
The MIL-SPEC dimension is 1.000 +/- 0.002 inches.
View Quote




1.000 +.002/-.000 through first 1.110   Remainder of bore is 1.000 +.006/-.000    Dimensions are before coating.

ETA: Deltronics pin action.

12/12/2013 4:00:30 PM EDT
[#7]
Quote History
Quoted:




1.000 +.002/-.000 through first 1.110   Remainder of bore is 1.000 +.006/-.000    Dimensions are before coating.

ETA: Deltronics pin action.

https://lh5.googleusercontent.com/f2nIp3kZCjiYocCUu_LJ-GfyA51h1R-Ifj2ZGkK_kyI=w843-h477-no
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
The MIL-SPEC dimension is 1.000 +/- 0.002 inches.




1.000 +.002/-.000 through first 1.110   Remainder of bore is 1.000 +.006/-.000    Dimensions are before coating.

ETA: Deltronics pin action.

https://lh5.googleusercontent.com/f2nIp3kZCjiYocCUu_LJ-GfyA51h1R-Ifj2ZGkK_kyI=w843-h477-no


Do you have a drawing?
12/12/2013 6:57:37 PM EDT
[#8]
I could draw it for you sure...  

I won't post prints however, sorry.
AR Sponsor
RS
silencerShop
cmmg
CA
ar15com
THBRD
bravocompany
brownells
ar15com
gray
colt
geissele
fightlite
blackhills
LAPG
Faxxon
palmetto
springfield
ar15com
primaryArms
SAS
Pro2A