How to remove rust from a chamber?

Wallabing · June 4, 2011, 09:02 AM

My WASR 10 has formed a little ring of rust deep withing the chamber, where the shouder of the case rests. It's hard to reach to physically remove it. This was just after 2 days from shooting surplus ammo. I ran windex patches through the bore and oiled the hell out of it, but apparently it wasnt enough to stop the rust after two days.

Does anyone know of any size bore brushes which can fit into a 7.62 x 39 chamber? Anyone know of any rust removing products aswell?

mehavey · June 4, 2011, 09:43 AM

I've not heard of such a rust condition as you describe here. (What make you believe it's rust as opposed to some other kind of fouling?)

That said, I recommend you get some Evapo-Rust, push a patch soaked in it down into the shoulder section of the chamber and leave it there for an hour or two (keep it soaked with a 1/4 teaspoon of solvent over that time.)

http://www.evapo-rust.com/

This stuff is incredible at removing rust compeletely without touching anything else. Having discovered it a few years ago, I use it for everything from godawful motorcycle parts to fine jewelry connectors. Like any rust remover, however, keep it away from that rust we call "blueing".

Jimro · June 4, 2011, 10:31 AM

unless you have a non milspec barrel your AK has chrome lined chamber and bore. Use a chamber brush and clean the heck out of it.

Jimro

Come and take it. · June 4, 2011, 02:33 PM

I thought some of the balkan region AKs did not have chrome lining

Jimro · June 4, 2011, 03:01 PM

The only Warsaw Pact weapon chambered in 7.62x39 that I know of that didn't have a chrome bore and chamber was the Yugo 59/66 SKS. As far as I know all the Romanian AKs were chrome bore and chamber.

Jimro

Willie Lowman · June 4, 2011, 03:41 PM

There are new AKs on the market with US made barrels that are not chrome lined.

Come and take it. · June 4, 2011, 04:10 PM

yugoslavian ak variant (m70) does not use chrome lining.

The WASR should though

Dfariswheel · June 4, 2011, 07:26 PM

All the Romanian made WASR rifles have chrome lined bores and chambers.
That's why you need to be careful how you remove the corrosion. Damage the ultra-thin chrome lining and the rifle will corrode faster and may give extraction problems.

For a chamber brush, buy a BRONZE (not stainless) one from Brownell's. To use, stab it into the chamber and rotate a few turns. Pull out and repeat.
Don't wrap it with a patch, that ruins the brush:

http://www.brownells.com/.aspx/pid=1...HAMBER_BRUSHES

NC Cruffler · June 5, 2011, 09:26 AM

I use a .45 ACP bronze brush on a short section of rod chucked in a variable speed drill. A little Filtz on the brush cleans the chamber really well. Go slow and stop insertion when you feel resistance from the brush reaching the neck taper area.
Same deal with a Mosin except I use a 20 gauge shotgun brush.

June 4, 2011, 09:02 AM	#1
Wallabing Senior Member Join Date: January 6, 2009 Posts: 109	How to remove rust from a chamber? My WASR 10 has formed a little ring of rust deep withing the chamber, where the shouder of the case rests. It's hard to reach to physically remove it. This was just after 2 days from shooting surplus ammo. I ran windex patches through the bore and oiled the hell out of it, but apparently it wasnt enough to stop the rust after two days. Does anyone know of any size bore brushes which can fit into a 7.62 x 39 chamber? Anyone know of any rust removing products aswell?

June 4, 2011, 09:43 AM	#2
mehavey Senior Member Join Date: June 17, 2010 Posts: 1,982	I've not heard of such a rust condition as you describe here. (What make you believe it's rust as opposed to some other kind of fouling?) That said, I recommend you get some Evapo-Rust, push a patch soaked in it down into the shoulder section of the chamber and leave it there for an hour or two (keep it soaked with a 1/4 teaspoon of solvent over that time.) http://www.evapo-rust.com/ This stuff is incredible at removing rust compeletely without touching anything else. Having discovered it a few years ago, I use it for everything from godawful motorcycle parts to fine jewelry connectors. Like any rust remover, however, keep it away from that rust we call "blueing". Last edited by mehavey; June 4, 2011 at 11:49 AM.

June 4, 2011, 10:31 AM	#3
Jimro Senior Member Join Date: October 18, 2006 Posts: 4,260	unless you have a non milspec barrel your AK has chrome lined chamber and bore. Use a chamber brush and clean the heck out of it. Jimro __________________ "Gorsh" said Goofy as secondary explosions racked the beaten zone, "Did I do that?" http://randomthoughtsandguns.blogspot.com/

June 4, 2011, 03:01 PM	#5
Jimro Senior Member Join Date: October 18, 2006 Posts: 4,260	The only Warsaw Pact weapon chambered in 7.62x39 that I know of that didn't have a chrome bore and chamber was the Yugo 59/66 SKS. As far as I know all the Romanian AKs were chrome bore and chamber. Jimro __________________ "Gorsh" said Goofy as secondary explosions racked the beaten zone, "Did I do that?" http://randomthoughtsandguns.blogspot.com/

June 4, 2011, 03:41 PM	#6
Willie Lowman Senior Member Join Date: March 5, 2009 Location: Uh-Hi-O Posts: 1,932	There are new AKs on the market with US made barrels that are not chrome lined. __________________ "No, it's not a silencer. This little doodad is my own invention. I call it a loudener." --Sledge Hammer

June 4, 2011, 02:33 PM	#4
Come and take it. Senior Member Join Date: May 16, 2009 Location: Kentucky Posts: 987	I thought some of the balkan region AKs did not have chrome lining

June 4, 2011, 04:10 PM	#7
Come and take it. Senior Member Join Date: May 16, 2009 Location: Kentucky Posts: 987	yugoslavian ak variant (m70) does not use chrome lining. The WASR should though

June 4, 2011, 07:26 PM	#8
Dfariswheel Senior Member Join Date: May 4, 2001 Posts: 6,573	All the Romanian made WASR rifles have chrome lined bores and chambers. That's why you need to be careful how you remove the corrosion. Damage the ultra-thin chrome lining and the rifle will corrode faster and may give extraction problems. For a chamber brush, buy a BRONZE (not stainless) one from Brownell's. To use, stab it into the chamber and rotate a few turns. Pull out and repeat. Don't wrap it with a patch, that ruins the brush: http://www.brownells.com/.aspx/pid=1...HAMBER_BRUSHES

June 5, 2011, 09:26 AM	#9
NC Cruffler Member Join Date: September 14, 2010 Posts: 30	I use a .45 ACP bronze brush on a short section of rod chucked in a variable speed drill. A little Filtz on the brush cleans the chamber really well. Go slow and stop insertion when you feel resistance from the brush reaching the neck taper area. Same deal with a Mosin except I use a 20 gauge shotgun brush. __________________ Dave Green NRA Benefactor Member