In the last week, I purchased a Colt 6920 and decided before I took it to the range, I would take it apart to see if there were any glaring problems (and doing it just for fun). So after finding no problems and completely re-assembling it, I do a function test.

1) Pull charging handle and release
2) Pull the trigger and hold. Dry fires just fine
3) Attempted to pull the charging handle with the trigger held, the charging handle seems stuck.

I release the trigger and still can't pull the charging handle. I also cannot turn the safety on. The safety stuck in the fire position. I pull the pin and open it up. If I cock the hammer manually, everything works, except I cannot do a function check. Again, the charging handle seems stuck.

What am I doing wrong or is there something wrong with the gun?