Crush Washer ?

[Shootum]

Help me understand what it is that these washer do / how do they work. I was working on my AR and changing out the flash hider, it seems I may be missing the concept of how to use these because my flash hider is not wanting to line up. I put the ky aide us on this but was concerned I was going to cause thread damage. Back in the day I always used Peel Washers.

 

[shortgrass]

My understanding is that a crush washer is usable only once and this is what I have experianced. When ya' go to but the break back on it doesn't want to index, kinda' sprung in a way. I've used a peel washer in combination w/crush washer with good results. I've ,also, used just peel washers.

 

[Josh-L]

Crush washers are to only be used once. They can also affect accuracy so I always use peel washers instead if I can. I cannot think of any reason someone would need to combine the two?

 

[Shootum]

My understanding is that a crush washer is usable only once and this is what I have experianced. When ya' go to but the break back on it doesn't want to index, kinda' sprung in a way. I've used a peel washer in combination w/crush washer with good results. I've ,also, used just peel washers.

That makes sense, thanks for the info.