[firemonkey150]

Anyone ever cut down a FBS on an Ar15 before? What's the best way to do it?

 

[purehavoc]

best way is take it off , I have done one its not that hard but I have lots of , power tools like large belt sanders , etc which makes the job quite easy

 

[Gatoragn]

Sawzall, an angle or bench grinder, a Rotozip sander, plus a little cold blue and you are good to go.