Having a gas issue (undergassed - not locking back on an empty mag) that I traced back to the gas block. I have tried different BCGs, new gas tube, and checked and cleaned the gas port, all to no avail.

 

The barrel has a pinned muzzle break that I would rather not cut off and replace, so I am thinking about cutting off the current gas block and replacing it with a two piece gas block - specifically the JPGS-9:

 

https://www.jprifles.com/buy.php?item=JPGS-9

 

Anyone have experience with this block?

 

Anyone have another recommendation?

 

The block will have to be low profile to fit under a Troy Alpha rail and will be installed on a 16" barrel with a midlength gas system. This is going on a "fun" gun - not a social or work gun.

 

Thanks!

I don't have experience with the block but did you check your buffer spring?

 

Sent from my SM-G920V using Tapatalk

Yes, the action spring is in spec.

I have experience with the YHM spectre block which seems to be back ordered everywhere, it works well but does not fit under low profile rails. However I just used the below two-piece for a 308 build and it seems to be solid so far. It appears to be low profile as well

 

http://www.trojanfirearms.com/en/ar-15-two-piece-gas-block

Holly crap, I had no idea they made that gas block. I must have it.

The JP or the Trojan?

 

Is that an endorsement for the JP?

The JP, I have yet to meet a JP product that didn't perform as advertised.

 

My excitement is that I could never find that item on their webpage somehow, a two piece adjustable gas block for .750 barrels. I knew they made one for .936 barrels, but I had no idea they made one for standard .750.