Warning

 

Close

Confirm Action

Are you sure you wish to do this?

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

fightlite
silencerShop
RS
THBRD
SAS
Pro2A
blackhills
cmmg
ar15com
JRH
LAPG
brownells
CA
dsa
LAPG
palmetto
gray
springfield
bravocompany
Faxxon
geissele
primaryArms
jt
bravocompany
cmmg
tnvc
trijicon
GS
Users Online3862 Online
bravocompany missing Hydra
Page AR-15 » Rifles, Uppers, Lowers, Barrels, and more
AR Sponsor: bravocompany
Archived [ARCHIVED THREAD] - gas system differences between 20" and 16"/14.5"
Posted: 10/21/2004 1:50:23 AM EDT
What are the differences between the gas systems of 20" rifle and 16"/14.5" carbines with standard FSBs?

Diameter and length of gas tube?

Size and configuration of barrel gas port hole?

Link Posted: 10/21/2004 1:55:50 AM EDT
[#1]
Diameter is the same.

Length....there are four gas system lengths. Rifle, usable from 16" (custom only w/ .110" gas port) to 26+", Mid length, for 16 or 18 inch barrels. Carbine, for 10.5 to 16 inch barrels, even some 18s. And super short for 6.5 and 7.5 inch barrels.

Gas port diameter varies based on barrel and gas sytem length.
Archived [ARCHIVED THREAD] - gas system differences between 20" and 16"/14.5"
Page AR-15 » Rifles, Uppers, Lowers, Barrels, and more
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.
JRH
CA
primaryArms
bravocompany
fightlite
springfield
jt
blackhills
ar15com
Pro2A
RS
brownells
THBRD
palmetto
Faxxon
SAS
cmmg
LAPG
geissele
LAPG
gray
silencerShop
dsa
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