AR-15 Short stroking...? Whats going ON!?

[MoDerN_WarRioR]

I will try some other brands of ammo. The only one im staying away from is Remington 223. which is one alot of people use, i have had nothing but failures whith this ammo. the PMC usually shoots amazing up untill now. But i have been shooting Winchester 5.56 and so far i have been pleased with it as well. i might try a few other brands.

What can i do to help prevent rocking or moving of the magz in the receiver?

-Chris

 

[taliv]

that mag moves normally. it's no big deal. (unless your magwell is ridiculously out of spec)


don't sweat the ammo. even wolf should cycle your gun.

 

[MoDerN_WarRioR]

Ya i figured it would have some play to it.

Thanks for the tips!

 

[Bartholomew Roberts]

Modern, it sounds like you have good magazines. Sometimes if the mag spring is worn out you can get that same symptom. These are new, reliable mags that work (and two different ones), so probably not an issue here.

I would go ahead and do the gas ring test Taliv mentioned. It is easy enough to do and is one more thing you can check before going to the range. Otherwise, it sounds like you have a good plan going. Take good notes and I am sure we can get it fixed.

It is a potential contributing factor. But what do I know? I only have to keep the 12 worn out, dirty, abused range guns running, three days a week for 6 weeks out of the year, long enough for the 260 or so users to shoot their qual course.

Will having the rings lined up lower pressure a minute amount? Yes. Will it lower it enough to cause a problem? Only if your rifle was already on the ragged edge of short-stroking anyway due to some other issue.

But you don't have to take my word for it, you are in a perfect position to test it yourself. Take those 12 rifles and deliberately line up the gas rings on them every time they get taken out for shooting in the next six months. Log any short-stroking problem regardless of the cause.

Now stagger the gas rings and do the same thing for six months. I'll bet you money the results are virtually identical given the sample size.

 

[Lex]

Any updates on this thread???

 

[[Pb]]

I think your bolt might not be all the way closed, look for crud buildup that might prevent it from locking. Your AR15 doesn't have a forward assist does it?

 

[The_Hammer_Man]

+1 to what {PB} says...

I have a DPMS Sportical in .223 too and when it was new it would fail to go completely into battery at times. Eventually it stopped doing it but it was a major source of irritation.

Does your Sportical have a carbine stock or an A2? The way I got rid of my "issues" was to put a SprinCo "red" buffer spring in it and replaced the stock buffer with a H-2 heavy buffer. The combination of those two parts really slams the door!