Is this AR chamber clean enough?

[Peakbagger46]

Used a chamber brush and mop and the star portion that mates with the bolt is great. Is that black ring at the chamber entrance a problem for reliability or OK?

 

[ExAgoradzo]

The sun never sets on a dirty gun, said my dad.

many will say they never clean...

It looks good to me...

Greg

 

[entropy]

The Armorer in me wants to say "no, go back and clean it until you think I will pass it" but in reality, it's probably fine.

 

[Peakbagger46]

The Armorer in me wants to say "no, go back and clean it until you think I will pass it" but in reality, it's probably fine.

That makes me feel some better.

I really like the AR platform but some of the weird and unreachable crevasses really piss me off when it comes to cleaning.

 

[briansmithwins]

That makes me feel some better.

I really like the AR platform but some of the weird and unreachable crevasses really piss me off when it comes to cleaning.

If you think ARs are bad you ought to try the roller delayed blowback guns. I think they manage to be dirtier than straight blowback somehow.

I’ve gotten to the point where I don’t necessarily clean everything perfectly anymore. Carbon and oil are a decent lube and pretty much any gun will run dirty and wet. Dirty and dry, sometimes not so much.

BSW

 

[Gojo03]

You better put a $20 bill in that one to get it to pass

 

[benEzra]

Used a chamber brush and mop and the star portion that mates with the bolt is great. Is that black ring at the chamber entrance a problem for reliability or OK?

View attachment 985252

From a reliability standpoint, it’s fine (just make sure it’s sufficiently lubricated). But if it bugs you, you can clean it out with the tip of a wooden toothpick. (And as far as weird nooks and crannies go, I think a Mini-14 is worse overall...)

 

[FL-NC]

Its fine.

 

[Destructo6]

Too clean, now go shoot it.

 

[mcb]

Too clean, now go shoot it.

Amen and pass the ammunition.

Clean is overrated IMHO. Well lubricated is were it's at.

 

[edwardware]

Is that black ring at the chamber entrance a problem for reliability or OK?

If you're cleaning for function, almost certainly.

If you're cleaning for self-righteousness, keep scrubbing.

I really like the AR platform but some of the weird and unreachable crevasses really piss me off when it comes to cleaning.

Has it occurred to you that Stoner knew it would be had to reach those crevasses, and knew it didn't matter, because they don't need to be that clean?

No doubt it'll stop for carbon buildup at some point, but you aren't in the neighborhood yet. Checkout LuckyGunner Labs AR Reliability study for some filthy functioning ARs.

The short summary is: an AR will run with very few malfs, nearly continuously, if all you do is add ammo and lube.

 

[Riomouse911]

If your DI is entering the barracks sporting a frown and a pair of white gloves.... get back to work on it.

If you’re going to take it back out and shoot it again...you did fine. I would lube it where it needs it, wipe it down and put it away.

Stay safe.

 

[swg1]

Curiously uniform ring. Looks like the finish on the barrel to me.

And yes, my former PTR-91 rifles were the dirtiest guns I ever had to clean after a limited range session. Amazingly dirty guns.

 

[mcb]

Curiously uniform ring. Looks like the finish on the barrel to me.

And yes, my former PTR-91 rifles were the dirtiest guns I ever had to clean after a limited range session. Amazingly dirty guns.

I agree @swg1. There is a large chamfer and fairly generous radius on the lead into the chamber of an AR barrel that we are also seeing. I suspect that black ring outside this lead into the chamber (assuming this is the black ring the OP is worried about) is simply the black oxide finish on the flat face of the barrel and the "clean/shiny" part is just the machined lead into the chamber that does not have any finish on it or possibly chrome if it has a chrome lined chamber. If the barrel and chamber is chromed that typical ends at the transition between that lead into the chamber and the flat face.

Notice the same black ring around the chrome lined chamber lead in this new barrel.

 

[Goes211]

I keep seeing posts about people who clean their guns. Interesting....

 

[BreechFace]

Run 'em wet, the oil soaked carbon just starts moving and puking out of any any close crevice.

 

[BreechFace]

I keep seeing posts about people who clean their guns. Interesting....

What else are people to do with their guns with ammo prices the way they are?

 

[45/30-06OKIE]

Used a chamber brush and mop and the star portion that mates with the bolt is great. Is that black ring at the chamber entrance a problem for reliability or OK?

View attachment 985252

TBH, mine isn't that much more cleaner but if you have shot a bunch it may be "stained" from numerous heat cycles and carbon.

 

[daniel craig]

Do you feel like cleaning it more? No? Then it’s clean enough.

 

[someguy2800]

I keep seeing posts about people who clean their guns. Interesting....

I tried it once. I didn't get what the hype was all about.

 

[mjsdwash]

i had an AR so dirty it was impossible
to see the lugs. The extension looked like it was full of wool. It was lead rings shaved from 22lr conversions. It felt gritty to charge it. It ran reliable with both 22lr and the 5.56 bolt