Brand new 4095. Trying to field strip to clean barrel before first firing. Disassembly would be complicated enough compared to other weapons but the two shroud pins and clips are near impossible. Took me an hour to finally rotate the clips initially and scratched up the weapon a few places. After that disassembly went fine. Seemed to reassemble easily enough but, when I went to do function tests I cannot get the bolt to lock back. In fact it is very difficult to get the bolt to slide back at all, requires a great deal of effort.Figured I would disassemble again but cannot get the pins out. They will not depress at all and the clips will not rotate. I'm stuck. Anyone know what to do?