Hi Mark, Yes it comes with both Top & Bottom Picatinny Rails. You could put a Red dot and light on this.

Yes it comes with both - Ruger Mark IV Tactical semi automatic pistol features some new upgrades that people have been waiting for. Starting off, the Mark IV features a new simple one button takedown for quick and easy field stripping. A recessed button in the back of the frame allows the upper receiver to tilt up and off of the grip frame without the use of tools. The tactical model has a threaded barrel so you can add a suppressor with top and bottom picatinny rails for optics or accessories. A new contoured ejection port and easy to grasp bolt ears allow for durable and reliable operation. The grip frame is a one piece precision CNC aluminum for strength and durability. All of this is backed by Ruger who is one of the nations leading manufacturers of rugged, reliable firearms for the commercial sporting market. ------ Specifications and Features: Ruger Mark IV 22/45 Tactical 40149 -- Semi Automatic Pistol -- .22 Long Rifle-- 4.40" Threaded Barrel-- Threaded 1/2"x28 TPI -- 6 Groove Rifling with 1:16" Twist -- 10 Round Magazine-- Checkered Synthetic Grips-- Fixed Front Sight-- Adjustable Rear Sight-- Alloy Grip Frame-- >>>>>Picatinny Top and Bottom Rails-- Simple One button Takedown-- Upper Receiver Tilt's up and off the grip frame without the use of tools-- >>>>>>>Drilled and Tapped for Weaver/Picatinny Style Rail-- Ambidextrous manual safety-- Magazine Disconnect Feature-- Overall Length 8.50"-- Overall Width 1.20"-- Overall Height 5.50"-- Overall Weight 35.6 oz

Hi Mark, Yes it comes with both - Ruger Mark IV Tactical semi automatic pistol features some new upgrades that people have been waiting for. Starting off, the Mark IV features a new simple one button takedown for quick and easy field stripping. A recessed button in the back of the frame allows the upper receiver to tilt up and off of the grip frame without the use of tools. The tactical model has a threaded barrel so you can add a suppressor with top and bottom picatinny rails for optics or accessories. A new contoured ejection port and easy to grasp bolt ears allow for durable and reliable operation. The grip frame is a one piece precision CNC aluminum for strength and durability. All of this is backed by Ruger who is one of the nations leading manufacturers of rugged, reliable firearms for the commercial sporting market.
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Specifications and Features:
Ruger Mark IV 22/45 Tactical 40149 --
Semi Automatic Pistol --
.22 Long Rifle--
4.40" Threaded Barrel--
Threaded 1/2"x28 TPI --
6 Groove Rifling with 1:16" Twist --
10 Round Magazine--
Checkered Synthetic Grips--
Fixed Front Sight--
Adjustable Rear Sight--
Alloy Grip Frame--
>>>>>Picatinny Top and Bottom Rails--
Simple One button Takedown--
Upper Receiver Tilt's up and off the grip frame without the use of tools--
>>>>>>>Drilled and Tapped for Weaver/Picatinny Style Rail--
Ambidextrous manual safety--
Magazine Disconnect Feature--
Overall Length 8.50"--
Overall Width 1.20"--
Overall Height 5.50"--
Overall Weight 35.6 oz

Mark, yes, both Rail and will mount a red dot, laser or scope rings or mount.