Bolt cam tension

[CHA-LEE]

Right on! I use them in all my piston AR's.
Another good add to prevent carrier drag would be a bolt spring sold by adams arms or buy one at ace hardware (compression spring #6) cut it shorter, remove the gas rings and install the spring.

I really like the spring idea. I will get one at ACE and give it a try.

[Kaiser.Shooter]

Please post an update how your rifle will run after new bolt cam pin and spring installed

[CHA-LEE]

I didn't get a chance to test this bad boy out this weekend. I was too busy freezing my ass off. Maybe next weekend will work out better.

[brutal]

I didn't get a chance to test this bad boy out this weekend. I was too busy freezing my ass off. Maybe next weekend will work out better.

I heard there was enough hot brass out there on the comp pistol berms Saturday to keep everyone warm.

[C Ward]

The ZM guns are a modified DI gas system not a piston gun . May be worth a call to them before monkeying with the gas rings . Pretty sure they are still there by design . Al Zitta is a 3gun shooter and I would expect would be quite helpful .

[CHA-LEE]

I FINALLY got this issue figured out. It ended up being the alignment of the barrel in the upper receiver. When the barrel was installed and barrel nut tightened the alignment pin was mashed into the left side of the alignment notch of the upper receiver. The barrel was basically twisted counter clockwise slightly in the receiver. I removed and reinstalled the barrel in the proper alignment with the pin at 12 o-clock and it has been running like a champ ever since. I am glad that I got it figured out, but it sucks to have wasted so much time and $$ on replacing stuff that would have never fixed an improperly installed barrel.

[CHA-LEE]

I also wanted to add that I did work with Al Zitta (Mr ZM Weapons) on troubleshooting this and he was super helpful.

[Kaiser.Shooter]

I'm glad you made your carbine to work properly! So it's not a piston system, right?
I'd buy the roll cam pin if you don't need it, LMK

[CHA-LEE]

You are correct and much to my surprise its not a piston system. I am going to leave the bearing roller cam pin in there because its "Cooler" than the stock one