My local gun shop has a Kel Tec RFB for sale. It appears to use metric FAL magazines. But looking at how the magazine is inserted it looks like a little simple file work would open it up to take L1A1 inch pattern magazines. Does anyone on this board have experience with opening up the Kel Tec RFB to accept inch pattern magazines? Hoping to get some answers here because the Internet seems to be relatively void of people asking this question.

Most folks are probably satisfied using the more readily available metric mags. Also, reluctance to modify the RFB for a different mag could be a deterrent.