Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
BCM
User Panel
GS
fightlite
magpul
troy
primaryArms
skd
VP
geissele
midwest
delton
laRue
aim
vortex
RS
springfield
bravocompany
silencerShop
CA
Hit
jt
palmetto
brownells
SDS
JRH

SAS
THBRD
dsa
Faxxon
brownells
palmetto
RS
fightlite
ar15com
cmmg
primaryArms
JRH
geissele
silencerShop
LAPG
Pro2A
blackhills
CA
LAPG
jt
springfield
gray
bravocompany
bravocompany
cmmg
tnvc
trijicon
Griffin
Users Online4844 Online
bravocompany missing Hydra
Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
Site Notices
Sponsor News TNVC Partners With Envision Technology - MARS Rangefinder Family, MARS-Lc!
Archived [ARCHIVED THREAD] - Upper swapping
Posted: 10/9/2007 7:59:37 PM EDT
Thinking of changing the A2 upper on my 9mm AR to a flattop upper. Question is how tight do I install the barrel nut, I know on a regular AR you can get it tight and then line the gas tube up so it will fit in the groove of the barrel nut. I'm guessing I should just get it as tight as I can. Any help is appreciated.

Thanks

Link Posted: 10/9/2007 8:34:51 PM EDT
[#1]
IIRC 30-80 ft lbs. is the correct spec. So I'd just be sure it's in that range and only worry about timing the barrel nut if you're installing a rail that uses pins to align it with the upper.

Link Posted: 10/9/2007 11:08:50 PM EDT
[#2]
50-80lbs is probably a better bet.  Also, tighten down and loosen 3 times and on the 3rd time, get it to the right torque.  
Archived [ARCHIVED THREAD] - Upper swapping
Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
Close Join Our Mail List to Stay Up To Date! Win a FREE Membership!

Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!

You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.


By signing up you agree to our User Agreement. *Must have a registered ARFCOM account to win.
fightlite
palmetto
RS
LAPG
JRH
primaryArms
ar15com
Faxxon
dsa
jt
geissele
springfield
LAPG
gray
SAS
silencerShop
THBRD
Pro2A
blackhills
brownells
CA
cmmg
bravocompany
missing
AR-15 AK-47 Handgun Precision Rifles Armory Training Competitive Shooting General Outdoors Archery Hometown Industry

About AR15.COM

Become an AR15.COM Team Member

AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.

From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.

Stay Connected

AR15.COM Facebook AR15.COM Twitter AR15.COM YouTube AR15.COM Instagram
Pepperjam Verification

Newsletter

Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.

Contact Us

Advertising
[email protected]
General
[email protected]

Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.

AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.

Advertising Memberships ARFCOM Shop Gear Deals Virtual Weapon Build Discussion Forums Help Privacy DMCA About Mobile Site View Your Privacy Choices California Consumer Privacy Act (CCPA) Opt-Out Icon   Goat Signal
** When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs include, but are not limited to, the eBay Partner Network and Amazon.
Top Top