I have been using a Magpul BAD for over 18 months and have taken two carbine courses in that time. What works for some people may not work for others, but I happen to like the concept of this device and I have incorporated it into my workflow--it works for me.

I am interested in learning whether anyone has tried replacing the factory part. I have the punches and the parts to try it but I was hoping someone went there already. This is probably impossible since there is a significant difference in the height of the bolt catch face on the 15-22 part.

What would be cool is if someone machined a 15-22 steel bolt catch with an integral battery assist device lever with proper clearance of the mag release lever and trigger well.