Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: 300 blackout? Will it work?
Document: I never got a chance to fire this muzzle break because it will not fit on my AR10 with a crush washer. It messes up the crush washer to where I have to use a screw driver and my gerber tool to twist it off like a screw. Without a crush washer it will go all the way down to the barrel and line up just fine. However because of all the problems I have ordered another muzzle device I am sure will work a lot better then this one.
Works great on my 6.8 SPC. I'd give it 5 but nothing is perfect lol. I'd definitely go with it again.
This unit made a heck of a difference from the standard brake on my 7.62! The sound buffering effect alone was worth the money, I shot this thing with a group of friends and they noticed the difference immediately...Now I'll get one for my DDM4 V5!
There is definitely a noticeable reduction in noise when shooting my rifle now. I would recommend this to all of my friends.
I had purchased this unit to quiet down my 6.8. I use it for deer hunting and the other brake was way too loud which required the use of ear plugs if I was going to be shooting from the ground or out of a tree stand. The claymore muzzle brake made it more bearable to shoot without ear plugs. I would always recommend wearing hearing protection when target practicing or sighting in your weapon.
Answer: no