AR Question

[Eric M]

A friend of mine just went out and shot his new gun he "built" on a budget. He said it fired great for 10 rounds and then wouldn't shoot every other round after that. I suggested either a bad magazine or maybe it was dirty or needed lubed (I dont think it was dirty 1st time shooting it). My only AR type experience is from the military so those were usually the problems. Any other thoughts on this? I know there are some serious AR guys on here.

[Jolten]

Had the same issue with my Grendel. If it's a brand new BCG it needs to be broken in. After about 200rounds it smoothed right out and haven't had any problems since.

[dreadi]

Are you/him sure that it’s every other round?

[CAMPMEAT]

Mine did the same thing. It was dirty.

[Biggerhammer]

More often than not. It’s one of four things.

Magazine
Buffer spring
Buffer weight
Gas flow. Gas port size/ gas port alignment.

[Eric M]

Mine did the same thing. It was dirty.

It was the first time he shot it but that was my first thought.

[Eric M]

Are you/him sure that it’s every other round?

He said the first 10 rounds were fine then it was every other round.

[Eric M]

Had the same issue with my Grendel. If it's a brand new BCG it needs to be broken in. After about 200rounds it smoothed right out and haven't had any problems since.

Be nice if that's all it is.

[Eric M]

More often than not. It’s one of four things.

Magazine
Buffer spring
Buffer weight
Gas flow. Gas port size/ gas port alignment.

Thanks. I passed this along. He said the spring and magazine were new. Is the gas port problem a simple fix if that ends up being what it is?

[CAMPMEAT]

Mine did the same thing. It was dirty.

It was the first time he shot it but that was my first thought.

Mine was not cleaned when I first got it. I just shot it and it was full of crud. Brake cleanered it and oiled it and that was all it took.....

[Eric M]

Mine did the same thing. It was dirty.

It was the first time he shot it but that was my first thought.

Mine was not cleaned when I first got it. I just shot it and it was full of crud. Brake cleanered it and oiled it and that was all it took.....

Thanks he's going to bring it over and have me show him what little I know

[yorketransport]

More often than not. It’s one of four things.

Magazine
Buffer spring
Buffer weight
Gas flow. Gas port size/ gas port alignment.

Look who's back! Should we start a count down until your next "vacation"

My suggestion was going to be either the buffer spring/weight or the gas system. They're pretty common issues with home built guns.

[b23]

More often than not. It’s one of four things.

Magazine
Buffer spring
Buffer weight
Gas flow. Gas port size/ gas port alignment.

Look who's back! Should we start a count down until your next "vacation"

Ohh now that's just mean. lol

I was going to ask if BH had to do some kind of community service or go to anger management classes as part of his road to recover program as NASCAR calls it. 

[Biggerhammer]

More often than not. It’s one of four things.

Magazine
Buffer spring
Buffer weight
Gas flow. Gas port size/ gas port alignment.

Look who's back! Should we start a count down until your next "vacation"

My suggestion was going to be either the buffer spring/weight or the gas system. They're pretty common issues with home built guns.

This last one was lame and weak. Its today’s norm, twist the definition and suppress opinions contrary to the “Twisted” definition. It's never been difficult to cipher who shoots and builds rifles and who doesn’t. 👍

[CAMPMEAT]

Hammer, did you do anything or put a different trigger in the Grendel I got from you ?