Hi Hussein,
Good to see an artillery piece in this forum!
Thanks for showing.
The guy at the front of the gun....
Why is he there?
If he is intended to act as an observer, these guns are directed via a forward artillery obeserver, who reports to a battery. Here, the battery commander and his staff command the guns with data to direct the gun. You may see the aiming device, collimator, at hip height of the left soldier on your picture of a real M10. Remember, the grenades follow a long way, thus not flying in straight lines. In reality, after the first shot, he would be deaf for weeks, if not for the rest of his life!
Having done part of my artillery officers education, we trained with these guns with a crew of 10 or 11 gunners.
Also, the blackened muzzle is not a reality! I can imagine that such would happen if the paint would get very hot. But by than, the gun tube would create severe problems. Therefore, a battery commander very carefully controls the amount and speed of grenades fired per gun, just to keep the barrel in 100% condition.
Nevertheless, you made a nice replica of a tremendous piece of artillery.
Thanks!