Poll: Having short stroking issues with new bolt carrier group

[Jzaden10]

You check to see if the gas key was tight?

Yessir I did the Wd40 test with the straw and checked the gas rings

 

[Joe13]

...or try that new BCG in another rifle.

Then I'd try that ^^^

 

[Jzaden10]

I might just call sharps and tell them the issue I'm having

 

[Jzaden10]

Or that also I will do that put it in another rifle

 

[titsonritz]

I put the old one back in and it cycled and shot just fine

There might be a clue in there somewhere.

 

[Jzaden10]

There might be a clue in there somewhere.

Well I'm going to try the yellow coded buffer spring with the same buffer since its light maybe from it being under gassed itll let the bcg push back more letting it eject and cycle properly maybe even lock back after the last shot

 

[osprey]

If it cycles and locks back after last round with a mil spec bcg, it is not undergassed. The problem is the new bcg. Weigh the two and see if there is any difference in weight between them. Stop looking for problems with the rest of the rifle, it is fine. Start looking for problems with the new bcg, unless you want to keep throwing good money after bad.

 

[wp4]

Have you tried a lighter buffer spring?

Oh, we are talking about guns?? My bad

 

[Jzaden10]

If it cycles and locks back after last round with a mil spec bcg, it is not undergassed. The problem is the new bcg. Weigh the two and see if there is any difference in weight between them. Stop looking for problems with the rest of the rifle, it is fine. Start looking for problems with the new bcg, unless you want to keep throwing good money after bad.

The new bcg doent cycle it extracts but doesnt push back enough to cycle a load nor does it catch on the last round I've oiled the crap out of it and sometimes it double feeds and I have weighed them

 

[Jzaden10]

The new bcg doent cycle it extracts but doesnt push back enough to cycle a load nor does it catch on the last round I've oiled the crap out of it and sometimes it double feeds and I have weighed them

They weigh almost identical

 

[titsonritz]

If it cycles and locks back after last round with a mil spec bcg, it is not undergassed. The problem is the new bcg. Weigh the two and see if there is any difference in weight between them. Stop looking for problems with the rest of the rifle, it is fine. Start looking for problems with the new bcg, unless you want to keep throwing good money after bad.

Thank you, I was just going to post something similar, in fact, I'd put money on the barrel being overgassed, most are.

OP this post is spot on, but hey if you like rabbit holes there you go.

 

[Jzaden10]

Thank you, I was just going to post something similar, in fact, I'd put money on the barrel being overgassed, most are.

OP this post is spot on, but hey if you like rabbit holes there you go.

How would it be over gassed? On 18" barrel and it has carbine gas system and it is a 3 .oz buffer with normal carbine spring. If you can please explain I would appreciate it. Thanks

 

[Jzaden10]

I'm sorry rifle gas system on carbine buffer

 

[titsonritz]

How would it be over gassed? On 18" barrel and it has carbine gas system and it is a 3 .oz buffer with normal carbine spring. If you can please explain I would appreciate it. Thanks

I'm sorry rifle gas system on carbine buffer

I would hope so, when I read that I was, huh?

It all starts with gas port and too many manufacturers make them extra large to accommodate people using cheap, under-powered, crap ammo like PMC Bronze or Tula.

 

[Jzaden10]

I would hope so, when I read that I was, huh?

It all starts with gas port and too many manufacturers make them extra large to accommodate people using cheap, under-powered, crap ammo like PMC Bronze or Tula.

Yes I did use cheap ammo though, maybe I should get 77 grain also to try that I used 62 grain and still had same issue.

 

[titsonritz]

Yes I did use cheap ammo though, maybe I should get 77 grain also to try that I used 62 grain and still had same issue.

55gr M193 or 62gr M855 or equal should run fine, you shouldn't need 77gr projectile to function properly.

 

[Jzaden10]

55gr M193 or 62gr M855 or equal should run fine, you shouldn't need 77gr projectile to function properly.

That's what I run is 55 and 62 grain

 

[notazombie]

Fix it yet?

 

[Jzaden10]

I am goin to the range Tomorrow I had to go by another key for the range so I'll be there tomorrow until I do fix it thanks for asking

 

[No_Regerts]

My barrel is so short that all I ever seem to do is short stroke.

Running it wet is very helpful, but too much and you'll have a big mess on your hands!

A lot of time when mine is in the middle of a cycle she'll spit it out and won't let me feed any more in too.

Your not alone, bro. A lot of us have these same issues. A lot.