Looking at building a gun for ESP and want to know if frame modifications like "SVI frame fluting" are legal. (sample picture attached) Emailed HQ with picture and no response so far.
Also I realize slide lightening isn't legal, but adding front serrations is. What is to much?
Yes I realize I'm an evil gamer - no need to go there.
Thanks,
Graham
Edit - I know the dust cover and barrel aren't legal.