Top m4: it has a hulkfet and shs steel cutoff lever installed. It shoots full auto in semi for some reason and I can’t figure it out. Maybe the trigger trolley? $100 Middle m4: it has a hulkfet and shs cutoff lever. The mock bolt is a little loose but it works fine. $120 Bottom m4: just has an shs cutoff lever and works just fine. $100 Prices do not include shipping (add $20 for shipping). I will do discounts if you buy more than one No trades It may take a little bit for me to ship because I’m currently waiting on some flat rate boxes to come in the mail so I can start shipping guns again.