Traded for a Spikes Middy upper and have a few questions. First this was made NJ compliant with the bayonet lug removed and has a perm. attached brake. First how will it handle compared to a regular A2 flash hider? I read that it can still be removed but will destroy the brake. If I did this would the threads be ok and I could just put whatever I wanted back on? Second should I used a regular or heavy buffer? I only shoot brass currently but if for some reason I needed to shoot steel Id like to be able to do it as well. Thanks.