I have an AR with strange issue

[RickN]

I see your problem, it is an AR.

 

[Perplexed]

I see your problem, it is an AR.

Not everyone can rock a sword like you do.

 

[RickN]

Not everyone can rock a sword like you do.

He is doing it wrong. Sword in right hand, gun in left. Make them duck the sword and shoot them in the top of their head.

 

[ClintC]

It time for a trigger group or new buffer and buffer spring. My guess is change the trigger group to a drop in.

 

[mr ed]

Could be as simple as buffer tube one turn out reducing spring pressure. Even a new spring won't help.

A common problem is putting in hammer spring backwards. misfires, reduces trigger pull sounds good but it's not, reduces hammer striking ability, can lead to full auto scenario.

I would suggest garbage in locking lug area or junk in firing pin hole, but you said upper works on other lower. which rules those out.

One other is you need a heavier buffer because your getting bolt bounce.

 

[Fallbackpuppet]

Change the spring with a new one. (a good new one). If you have an H buffer, replace it with a standard buffer.

Standard 3oz buffer and I plan on swapping the spring

 

[Fallbackpuppet]

Yep, yep, because you know, I’d never, ever put a critical spring in wrong….well, maybe, but I ain’t admitting here in a public gun forum….no way…

I am not beyond making such an error, but doubt I would have done it over and over as many times as I swapped trigger groups around. I am leaning towards not being fully in battery at the moment.

 

[ClintC]

Standard 3oz buffer and I plan on swapping the spring

If you lived closer. i have a lot of mil spec trigger group parts pilling up. i thing i even have buffer spring and buffer.

 

[Fallbackpuppet]

I see your problem, it is an AR.

I was an AK guy for a long time then I got some more money and became a PTR91 type guy. I do have Ar15s and AR10s but still prefer the PTR especially after the trigger job.

 

[GlockPride]

I am not beyond making such an error, but doubt I would have done it over and over as many times as I swapped trigger groups around. I am leaning towards not being fully in battery at the moment.

If you didn’t catch the tongue in cheek, my apologies. I was pointing towards myself.

It’s more than likely the buffer/spring.