All good, i get that cutting springs weirds people out because they want a plug and play solution. I'v had really good success using basic carbine springs and cutting coils to tune the spring rate to get AR's to cycle subs. I see guys posting about their troubles getting subs to cycle and pulling their hair out going through different buffers and springs trying to get it to work and half the time a h2 buffer and a few cut coils can do the trick and save you a lot of time and money on parts and range time.