my fgc got feeding issue.if i compress the bullet full length down to about 28mm it can feed well. but it cant feed 29.5mm standard ammo.and there is always a scratch on the case neck after charging. I observed that the bullet was stuck between the feedramp and the chamber at an angle of about 60 degrees. If I used the MP5 slap to load the bullet, the problem would be solved, and the total length would still be compressed to 28mm+ when I took out the bullet and measured it.