I HAVE JUST BOUGHT A NEW G 21SF I AM HAPPY WITH THE PISTOL AND IT WORKS GREAT BUT I FEEL THERE IS MUCH ROOM TO IMPROVE ....LIKE STEEL GUIDE ROAD AND THIS AND THAT ...I DONT REALLY NO WHAT I SHOULD CHANGE NOR DO I WANT TO COMPROMISE WHAT GLOCKS ARE KNOWN 4 THERE REALIBILITY... SO HOW REALIBLE ARE THESE AFTER MARKET PARTS AND WHICH ONES SHOULD I GET AND WHERE ...IN SHORT HOW DO I MAKE THE ULTIMATE GLOCK 



















































