I have to questions about J frame revolvers. I know that S&W revolvers come in square and round but. However, I have acquired a model 49 in nickel, and a model 40 in blue. Both guns have there factory grips, and were bought to carry. The model 40 was made in 1961 ,and has the grip safety . Can any one tell me if aftermarket grips will fit? eg Hogue or badger? or must I keep the original grips . I think they are called banana grips. I thought of getting a tyler but can not find one. I am worried about the grip safety. Also need grips for the 49 for pocket carry as one is cracked. I would like to pocket carry the 49 in a holster. I know the 49 is a older gun as nickel is no longer standard production. The Sn isAAV8709. With three letters in the sn# modern grips should fit. The reason I am asking is cause I got a new lady smith and had to knock a pin out, and knock a new pin in the frame just to install a Hogue rubber grip . Thank You all in advance for your advice and recommendations.