AR15 trigger reset

[Mr. J]

I recently built a AR using the following parts...

Stag 2ht upper
Doublestar Lower
Stag A2 Stock
RRA LPK

When I fire the rifle it extracts the spent case and reloads another round. The problem is the trigger doesn't reset. I'm using the wal-mart 100 rounds vaule pak ammo. I tried using another magazine and it still didn't reset.

Any ideas on troubleshooting?

[ohsmily]

I recently built a AR using the following parts...

Stag 2ht upper
Doublestar Lower
Stag A2 Stock
RRA LPK

When I fire the rifle it extracts the spent case and reloads another round. The problem is the trigger doesn't reset. I'm using the wal-mart 100 rounds vaule pak ammo. I tried using another magazine and it still didn't reset.

Any ideas on troubleshooting?

Sounds like you screwed up the trigger group installation. Have you functioned checked it to make sure the hammer isn't just following the BCG on its way forward?
Can you post a picture of the inside of your receiver so we can possibly help you out?

[Mr. J]

I fired a 7.62 upper on the lower and it worked fine. Is the buffer and spring a different weight for 7.62x39? Is the 7.62 spring too powerful for .223?

[maschronic]

that is my guess too. post up a picture of your installation.

[jgraham15]

I recently built a AR using the following parts...

Stag 2ht upper
Doublestar Lower
Stag A2 Stock
RRA LPK

When I fire the rifle it extracts the spent case and reloads another round. The problem is the trigger doesn't reset. I'm using the wal-mart 100 rounds vaule pak ammo. I tried using another magazine and it still didn't reset.

Any ideas on troubleshooting?

I have seen this issue a couple times lately in this forum! Did you install the disconnector spring properly? That seems to be the issue other people have had.

[Mr. J]

I seated the fatter end of the spring down into the part.

[jgraham15]

I seated the fatter end of the spring down into the part.

Hmmm, Does the trigger work properly when you function check it?

[Mr. J]

Hmmm, Does the trigger work properly when you function check it?

Yes it does.

[Jwood562]

so are you not able to fire a second round? what do you do to fix it to fire another round?

[Desert_AIP]

Trigger spring installed upside down.

[gunrun45]

What kind of bolt carrier do you have in your 223 upper...

[Mr. J]

The trigger spring is installed correctly.

The bolt carrier is factory stag .223

[Desert_AIP]

If it's ejecting and loading it's not short stroking so the carrier is coming back far enough to cock the hammer. Sounds like the disconnector is not releasing the hammer.

Describe how you are performing the function check when the upper is off the lower.

[Mr. J]

No idea how to function check with the upper off.

[javalos]

Check out video

No idea how to function check with the upper off.

The video on assembling a stripped lower shows you how to function check.

http://www.lifelibertyetc.com/RangeBag.aspx