A lesson on QC, due diligence, and testing before modifying.

[Iraqgunz]

Likely More Too much gas. Many I have seen were in the high .070 range.

Are we talking Literally More Than enough gas or Less Mass Transiting through the gas system?

[RHINOWSO]

Always fire every weapon in new condition, with zero mods aside from optics (rifle).

Anything else is a potentially huge waste of time and money.

[ginzomatic]

Likely More Too much gas. Many I have seen were in the high .070 range.

Well hopefully it's not Likely Many Times incorrectly gassed like many of them are.

Brutal.

I had such a high opinion of their product for a long time


Sent from my iPhone using Tapatalk

[Iraqgunz]

Agreed. Even something as simple as stock rifle/carbine should be checked. I know one particular agency that removes handguards, gas tubes and checks barrel nuts before they are issued due to previous problems with several loose barrel nuts.

Always fire every weapon in new condition, with zero mods aside from optics (rifle).

Anything else is a potentially huge waste of time and money.

[Uni-Vibe]

Less Mods Today with a brand new rifle.

[TomMcC]

You may already plan to do this, I would take the nut completely off the threads and take a close look at the threads and the nut to make sure everything is ok, if so torque it down.

[Todd.K]

It happens. My issue M4 did the same thing, I think my Company had 15 or 20 so it was a bad batch. New guy at the barrel nut torquing station at Colt I guess. Luckily happened in train up so they were all fixed before deploying.



Pro tip. Torque the barrel nut to MAX and then loosen 2 or 3 times. Then reapply a little grease (don't forget the face of the barrel extension) and torque to finish.

[crosseyedshooter]

Man, this thread brings back memories. One of my first complete AR purchases during the last administration was a lightweight profile barrel M4 from a company renown for their QC. The safety selector didn't flip to 90-deg and they wanted the entire rifle back for inspection. Well, I didn't want to give up the rifle, so I upgraded to a BAD-ASS ambi safety which seemed to solve the 90-deg problem. About six months later, I noticed rub marks under the right-side lever and realized that the selector core wasn't centered between the receiver. The detent hole location was drilled out of spec, which wouldn't be a problem for a left-side-only selector. None of my other lowers from this company had the problem and I eventually sold it.

I also have another lower from the same company with an A5 receiver extension that has a stuck bolt release. I shoot left-handed and use my trigger finger to drop the bolt but can't do it with this particular lower out of eight ARs I own. There must be a burr or something catching when the bolt is putting pressure on it. It feels completely normal just fingering it without the bolt applying pressure to the bolt catch. It works when shooting right-handed and doing the palm slap, so I can see how not everyone would consider it a problem.

These small details probably don't show up on any checklist and many not be caught by inspection. I guess my examples are Basic Checking Mistakes compared to your under-torqued barrel nut.

[Firefly]

Let Me Tell you that these things happen and a Lot More Than that will deter me from Loving My Team.

Lessons, Mistakes, Takeaways. All part and parcel of Learning More Things.

[titsonritz]

Like Massive Turds