This is a discussion on How many issues can you spot? within the Reference forums, part of the M14 M1A Forum category; Unfortunate that he didn't try to fire a live granade and let natural selection settle it....
I was reading the comments and then saw his response(s). Instead of discussing the issue or trying to learn something, he just spouts off. I was going to respond, but figured I would have more luck going to Chuck-e-cheese and talking to the mouse.
We can all agree his knowledge on the M1A is limited. I own both rifles and the C308 gas system is not adjustable. He is pointing to the bayonet lug and saying it adjusts the gas system. Maybe he is intending this video as satire. I hope!
I am not here to engage in arguments. Your opinion is your opinion, and I respect that. however, for those of us who make "informational videos" we have an obligation to make every effort to provide accurate information, otherwise we are doing a dis-service to the viewers. The most inaccurate information that you have provided is not only wrong, it can cause damage to people's rifles if they follow your advice.
When you backed off the gas lock one full turn, you changed the interface between the operating rod, bolt roller and gas piston. The rifle was designed so that the operating rod stops forward motion against the gas piston. When you moved the gas cylinder forward, you moved the piston forward which moved the operating rod forward. Every rifle is different and there is a high probability that the operating rod will now be stopped by the bolt roller. This will cause premature failure of the bolt roller. The roller will break and fall off, disabling the rifle.
Try this: Tighten the gas lock all the way and insert the gas plug. When the plug is getting close to being fully screwed on, you'll notice that at some point, you'll feel resistance. When you feel this resistance, watch the operating rod begin to move back as you fully tighten the plug. You'll notice that the operating rod moves off the bolt roller. Optimal timing of the gas plug is about 1and a half turn from the time the plug meets resistance to the time that it is fully torqued. When you back off the lock, the plug will never push the piston far enough to touch the operating rod and it will be bound against the bolt roller. The bolt roller will eventually break.
Some rifles have gas plugs that time about 3 turns before snug, so they may still survive a backed off lock and the operating rod may still be stopped by the gas piston, but there's no guarantee. I just tried it on one of my rifles and it barely backed the operating rod off the roller. After a few hundred rounds, that will not be the case and the roller will eventually be stressed.
Also, by backing off the piston, you moved the front band off the shoulder of the barrel. The band must be tight against the barrel shoulder, which is a critical component in M14/M1A accuracy.
I am respectfully asking you to remove the video, edit out the part about "tuning" the gas system and re-post it. The rest of the misinformation will only frustrate M1A owners but at least it won't cause physical damage. I invite you over to my youtube page to learn more about these historic rifles and how they are to be properly set up and maintained. This is not an invitation to troll or argue, it is an honest respectful invitation.
There is no hope for some, but at least I feel better knowing I tried to help him. Tony, that was a very admirable and professional offer to help a guy learn. I fear this man is not interested in learning, but instead is focused on ACTING like he knows everything. Some peoples pride leaves no hope for reason. I admire you for trying Tony. It is his loss, not ours. I just hope his info does not mislead people and end in an injury or a destroyed rifle.
All of that work to mount a scope is unnecessary.
If you can open the gas system with just your fingers, that's a no go in my book.
What's with the gas mask?
I reckon some are just destined to be part of the don't let this happen to you crowd.
I lost it when he showed us how to "adjust" the gas system. It was pretty sad.....
I'm surprised that the U.S. Army or the Marine Corps never told all the young men that you could adjust the Gas System on the M14!
You live to learn new information every day of your life. To bad that VS didn't learn anything before opening his mouth and posted it on You Tube for all to see His absence of knowledge with an M14 or M1A became apparent.
Some dude keeps saying the gas system is flawed because the gas plug keeps backing out. No matter how many times I tell him the gas system was compromised by that guy's "adjustment" he keeps saying I won't look past the flaws in the system.
It's exasperating, I tell ya. I guess I better stop talking to that one.