to nitesite:ok bro you got me wondering now. i called the ATF and spoke with an agent before making the extention. he told me that with the breach closed it had to measure 18.5 inches. as far as attaching it he said if you could not screw it off it is considered permanent. i said can i pin it on...
well here she is.i bought it from a friend of mines son who bought it from his friend. when i got it it looked short to me so i pulled the tape on it and yeah it was. so i machined the flash suppressor myself at work and pinned it to make it legal. it had a stock forarm on it until today when i...