Not that mutherscratcher
Sorry if this is dumb, but a few years ago I attended a Concealed Carry Class and I remember my instructor telling other members of the class who mostly had glocks that if they had the older model glocks they coud send them back to the factory or what not and they would exchange the older part(s), namely the recoil spring with an updated version with little or no cost. He seemed to know what he was talking about cause he gave in detail the parts and services they would perform as I guess he had the same done with his, I assume. I listened to what he said even tho I didnt have a glock at the time and heard him but kinda shrugged it off. Now I have an older model glock 22 and am wondering if anyone has done this or at least tell me Im stupid. Well thanks guys.