Don't buy for your own safety - Tacfire .308 5/8inX24 Thread Shark Muzzle Brake

I am building my first AR-15 and decided to do a 300 blackout. I thought that this would be a good cheap muzzle brake since in need one to make a featureless. Boy...was I wrong. Looked good until I started screwing it on. From the side I noticed that it was moving like it was bent. Took it back off and started screwing it back on while looking at it from the end. The exit hole was going not even close to staying. Do yourself a favor and whomever is around you and don't buy this thing. Wasted money.

This might be my first AR build but I am very familiar with military weapons.