There's this guy on YouTube he's injecting igf-1 into his fat pad right above his penis & applying DHT gel to his penis, while doing jelqing and pumping routine. he claims that he had about a half inch of growth within a month... he doesn't tell you where he got his igf-1 and how much he is using though. Maybe I can ask him though.... he says the HGH he's injecting helps him heal within the same day and builds new cells hand veins.
He also used TB500 which I have used in my recovery of PFS along with igf1... It's too soon to report if I'm back to normal but things are progressing very well for me, but I'm using products to return to my normal size, since Finasteride affected my genitals in a horrible way... If it goes beyond it, I'll let everyone know... from the rooftops... still, I know GH and IGF will grow the penis, as well as hands, nose, ears and head... everything... if used for long periods... all this comes down to discipline tho... so i would start with a bathmate and arginine regiment... 6G of arginine will yield a slightly fuller erection... this plus bathmate will stretch the penile tissue and allow fuller erections in the long term... though it'll take many months to begin to see benefits, this is decently safe and without hormones...
if you add in DHT & IGF, to the above regiment, you should see a slightly quicker response... I wouldn't say 1/2 inch in a month but I absolutely agree it's possible...