ar15 gas port woes

marksman8351 · May 20, 2011, 04:56 PM

a friend of mine bought an ar15 a few years ago and im pretty sure he never cleaned it well enought besides a basic cleaning. he shot a ton of 22 thru it with a conversion kit and lately the gun has been short strioking and he cant get it cycle just fire. i looked into the gas tube and i it was completely crudded up and took some picking to clean it up we tried to fire it again with a new gas tube as well as the claned old one and nothing worked still the same i looked into the gas port hole in the barrel and it looks as if it is completely crudded up so im guessing that no gas can pass thru is there any wayt to clean this safely other than just replacing the barrel the barrel that would just seem like a waste of money

fatboy914 · May 20, 2011, 05:10 PM

yeah help me

m.p.driver · May 20, 2011, 05:38 PM

Drift the pins out of the front sight base and slide the base off.Clean the port good with the right size drill bit,by hand ,you're removing lead and carbon not barrel.Do the same with the sight base and slide back on.Get you a good lead removing solvent and clean all lead out of the barrel.

marksman8351 · May 20, 2011, 06:12 PM

Im having an impossible time trying to get the sight off my gun the pins wont budge any recokmendations?

travywestside · May 20, 2011, 06:25 PM

the pins are larger on one side than the other, so first you have to make sure you're pounding on the correct side, or they wont come out. I found that it works best if you lay the area with the front sight/gas block on a block of wood, have a buddy hold the barrel and pound the crap out of it.

marksman8351 · May 20, 2011, 06:53 PM

ill try it

marksman8351 · May 20, 2011, 11:15 PM

Still wont budge any suggestions

Dfariswheel · May 21, 2011, 06:14 PM

Get the barrel and sight in a well braced no bounce-no move set up.
If the barrel moves or bounces when struck, the force is dissipated and the pins will deform instead of move, locking them even tighter.

Make a "starter punch" from a standard punch by cutting it off to about a 1/2" working length. This prevents the punch from flexing or bending and again, dissipating the force.

Drive the pins from the left side of the rifle, as you'd sight down the barrel.
It helps if you can use a smaller dead-blow hammer since it too directs all the force to the pin.

HiBC · May 22, 2011, 04:43 AM

In general I do not shoot lead bullets through anything with a gas port.

marksman8351 · May 22, 2011, 06:25 PM

neither do i however some people just need to live and learn

a little more money now saves a headache in the future

May 20, 2011, 04:56 PM	#1
marksman8351 Member Join Date: February 22, 2011 Posts: 74	ar15 gas port woes a friend of mine bought an ar15 a few years ago and im pretty sure he never cleaned it well enought besides a basic cleaning. he shot a ton of 22 thru it with a conversion kit and lately the gun has been short strioking and he cant get it cycle just fire. i looked into the gas tube and i it was completely crudded up and took some picking to clean it up we tried to fire it again with a new gas tube as well as the claned old one and nothing worked still the same i looked into the gas port hole in the barrel and it looks as if it is completely crudded up so im guessing that no gas can pass thru is there any wayt to clean this safely other than just replacing the barrel the barrel that would just seem like a waste of money

May 20, 2011, 06:25 PM	#5
travywestside Member Join Date: March 15, 2011 Location: Erie, PA Posts: 44	the pins are larger on one side than the other, so first you have to make sure you're pounding on the correct side, or they wont come out. I found that it works best if you lay the area with the front sight/gas block on a block of wood, have a buddy hold the barrel and pound the crap out of it. __________________ "I have a very strict gun control policy: if there's a gun around, I want to be in control of it." - Clint Eastwood

May 20, 2011, 05:10 PM	#2
fatboy914 Junior Member Join Date: May 20, 2011 Posts: 2	yeah help me

May 20, 2011, 05:38 PM	#3
m.p.driver Senior Member Join Date: January 25, 2009 Location: Ohio Posts: 552	Drift the pins out of the front sight base and slide the base off.Clean the port good with the right size drill bit,by hand ,you're removing lead and carbon not barrel.Do the same with the sight base and slide back on.Get you a good lead removing solvent and clean all lead out of the barrel.

May 20, 2011, 06:12 PM	#4
marksman8351 Member Join Date: February 22, 2011 Posts: 74	Im having an impossible time trying to get the sight off my gun the pins wont budge any recokmendations?

May 20, 2011, 06:53 PM	#6
marksman8351 Member Join Date: February 22, 2011 Posts: 74	ill try it

May 20, 2011, 11:15 PM	#7
marksman8351 Member Join Date: February 22, 2011 Posts: 74	Still wont budge any suggestions

May 21, 2011, 06:14 PM	#8
Dfariswheel Senior Member Join Date: May 4, 2001 Posts: 7,478	Get the barrel and sight in a well braced no bounce-no move set up. If the barrel moves or bounces when struck, the force is dissipated and the pins will deform instead of move, locking them even tighter. Make a "starter punch" from a standard punch by cutting it off to about a 1/2" working length. This prevents the punch from flexing or bending and again, dissipating the force. Drive the pins from the left side of the rifle, as you'd sight down the barrel. It helps if you can use a smaller dead-blow hammer since it too directs all the force to the pin.

May 22, 2011, 04:43 AM	#9
HiBC Senior Member Join Date: November 13, 2006 Posts: 8,283	In general I do not shoot lead bullets through anything with a gas port.

May 22, 2011, 06:25 PM	#10
marksman8351 Member Join Date: February 22, 2011 Posts: 74	neither do i however some people just need to live and learn a little more money now saves a headache in the future