Hello Todd
On this photo is turret interior almost finished. I have used Bronco's resin mantlet, which is solid from inside, so this is one of reasons to shorten the whole gun assembly. Even if I widened out the turret ring, it is still too narrow but I met some "technological limits". The gun assembly in the kit is nicely done but from my point of view it is sutable for M10 Achilles, but wrong for Comet.

On the next not so good photo you can see one of older attempts to make new gun assembly (not the final one) just to illustrate what is original and what is newly made.

regards
Petr