Are the rear fixed sights meant to be removable? Just want to confirm before I hit it with penetrating oil and heat. I had tried unscrewing the rear screw with the proper sized screw driver, but the head began to disform.
What's the specs/thread pitch for the screws I'd need for the receiver rail holes? I'm planning on plugging them off with some grub screws.
Lastly, which choke size do these come with?
The shotgun is very decent for the price. Compares very closely to my pre freedom arms remington 870 express, inside the receiver is almost as clean as far as machining marks.
Edit (Answers):
Choke: Choke that came with it has 3 notches, so that should be a modified choke, and is threaded for Winchoke.
A common M4-0.7x8 machine screw with counter sink head fit perfectly in mine as a replacement.