...that the action doesn't fully close when stripping the top round from a fresh magazine after using the bolt release while holding the weapon at "high port" during a reload?

Dangerous as in it's going to cause an unintentional discharge, or an out of battery discharge, or similar? No.

Dangerous as in the thing you're relying on to save your life isn't fully reliable and may cost you? Yes.

But it'd take a massive amount of rounds between cleanings to get to that point from just fouling alone. There are several high profile long term AR15 experiments where ARs went 10k-40k+ rounds without cleaning and yet remained functional. See Pat Roger's Filthy 14 at 40k+, or Military Arms Channel's endurance test at 10k+.

So if your rifle is doing that, it likely isn't fouling alone. Sounds like a combination of issues. Perhaps a weakened recoil spring, or an out of spec bolt/chamber, or sand/debris in the action, or simply a lack of lubrication, etc.

quote:

Dangerous as in it's going to cause an unintentional discharge, or an out of battery discharge, or similar? No.

That is what I was getting at.

One of my rifles did experience this condition a few times. Recoil spring was fresh, and one with inherent extra strength. I don't think an out of spec bolt or chamber is a factor, though I haven't done a battery of measurements.

There was no shortage of crud, and a slight lack of lubrication. Though these conditions are not out of the ordinary for suppressed shooting.

In a previous conversation, I proposed that this sort of condition presents a justified and proper use of the forward assist. It doesn't create a dangerous condition, which the forward assist often gets blamed for.

I don't disagree that the condition is not ideal, and should be avoided in the first place, if possible.

quote:

Originally posted by RogueJSK:
But it'd take a massive amount of rounds between cleanings to get to that point from just fouling alone.

Traditional rifle suppressors blow a ton of shit back into the action on DI AR's, especially if you haven't "tuned" the gun. I can foul my 11.5" to the point where I need to either start using the forward assist or start hosing it down with lube in as few as 300 rounds.

And yes, I really need to "tune" that gun.

Ah, true.

Those high round count tests were unsuppressed.

Will a squirt of lube make it seat?

Pat was my first thought as well. Man, I miss him. “You’re paying me an awful lot of money, so how’s about you let me be in fucking charge?”

But, even running suppressed, it’s been my experience that you lube it and it’ll keep going. Chunks and all. I’d guess they’re come a point that it’ll eventually stop, but I don’t know when that would be, or practically speaking who could legitimately get to that point except in the name of science.

Every issue I have had with an AR, M16 or GAU was corrected with proper lubrication.

Also, what caliber and what magazines? I would check gas tube, key, and receiver alignments, but that is probably not the problem.