Hi Robert and welcome. Yes, the Warren Tactical Blacked Out Rear Sight and Cover Plate are included. Cheers, stay safe and enjoy!

Yes, you would receive the Warren Tactical Blacked out rear sight along with the optic cut cover plate.

Yes.

yes it comes with iron sighs also see *****
Century Arms Canik USA T9 SFx Pistol Specifications and Features:
Century Arms Canik USA Item Number: HG7166GN
Semi-Auto Pistol
Striker Fired Handgun
9mm Luger
20 Rounds
5.2" Barrel
Ready indicator on the Striker
*****Fiber Optic Front Sight
*******Warren Tactical Blacked Out Rear Sight
Optics Ready Slide
Switchable Magazine Release
Magazine Release is Adjustable for Length
Enlarged Slide Catch
Front and Rear Cocking Serrations
Loaded Chamber Indicator
Tungsten Gray Steel Slide
Black Polymer Frame
Picatinny Accessory Rail
Nickel Plated Fire Control Components
Overall Length: 8.27"
Weight: 1.83 lbs
Tungsten Gray/ Black Finish
Includes:
Canik MeCanik MO2 Red Dot Sight