Blow back in Mag

[Craig O]

Recently I have noticed a large amount of blow back in my AR 15 magazine. What would cause this ?

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[MountainBear]

Please describe the issue better. As a gunsmith, when I think blowback, I am generally referring to a specific operating system. What actual symptoms are you experiencing?

 

[Certaindeaf]

Like unburned powder? Handloads?

 

[rick benjamin]

Changed ammunition?
i found Wolf to be very dirty

 

[Deavis]

Shooting with a suppressor? They get dirtier quicker.

 

[Craig O]

The best way I can describe it is. When you load a mag with new ammo the ammo is clean and shiny after a few ( 2-3 ) the ammo in the mag is very dull and has a light residue that can be cleaned off with a rag. I could be going nutz and this could be common in the AR platform.

 

[Capn Jack]

If this is your first AR, I'm not surprised you are shocked by the amount of carbon blown into the action. I know, as an ex bolt gun shooter, I was.

 

[Craig O]

If this is your first AR, I'm not surprised you are shocked by the amount of carbon blown into the action. I know, as an ex bolt gun shooter, I was.

Yes it is However I never noticed it before must be a knucklehead moment.

 

[tarster]

if you are shooting without a suppressor I would be alarmed.. you may need a heavier buffer and or heavier bcg to keep your bolt locked up longer, but if you are shooting suppressed.. Its normal.

 

[osprey]

Today I had gunsmoke coming out the bottom seam of the CPD mag in my 11" 7.62x39 pistol while shooting suppressed. Good times . Never have seen it shooting non suppressed. Maybe way over gassed?

 

[Who The F R U]

It's a AR-15.

 

[v0lcom13sn0w]

shooting with a suppressor?

 

[Caveman Jim]

OP, there are a lot of unanswered questions that may tell the tale.