Would you contact the manufacturer Update: Post 24 - Muzzle device issue? Help please

**californiasushi** · 07-18-16, 22:43

I've gotten results like that with an upper and it was RMA'd after some back and forth. Nowadays I just usually stick to brands I've had good luck with accuracy-wise.

**Scoby** · 07-19-16, 04:48

That would be going back for certain.

Keep us posted.

**BufordTJustice** · 07-19-16, 07:48

Originally Posted by Eurodriver

Shot it again today with the muzzle device removed. M855 shot nine inch 10rd groups at 100 yards.

The manufacturer has been contacted. It was bought as a complete upper.

Yeah. That's bad. Real bad.

Keep us informed.

**T2C** · 07-19-16, 08:10

Originally Posted by BufordTJustice

Eventually, yes. But I'd check barrel nut torque and muzzle device torque first.

^^^
This is what I would check if the rifle was on my work bench.

**Eurodriver** · 07-22-16, 12:51

I disassembled it, and the torque on the barrel nut was solid but has to be about 70ft lbs to get the teeth to line up for the gas tube. The muzzle diameter is .224 - exactly the same as it is on another AR I have sitting next to it, so it is not constricted.

The manufacturer has agreed to look it over, but I am going to shoot it one more time this weekend with no muzzle device and several different types of ammo to see if maybe reassembling it has fixed any gremlins that were hiding in the shadows. If it doesn't improve, I'm dropping it in the mail. I will take MM's advice to shoot it side by side with a rifle by the same manufacturer with the same ammo and the same optic.

**T2C** · 07-22-16, 13:25

I would be tempted to slug the barrel and check the bore diameter.

**Eurodriver** · 07-22-16, 13:43

Originally Posted by T2C

I would be tempted to slug the barrel and check the bore diameter.

I would too, if:

A) I had the tools to do that
B) I had the time to do that
C) The manufacturer wasn't playing ball.

Hopefully they don't send it back like "Shot great for us. Sorry you suck".