You could throw on the Merc Foregrip for some additional hip fire accuracy, but it’s not necessary with the accuracy provided by the Laser.
Having the extended mag does sacrifice a bit of your movement speed for 30 extra rounds, which may or may not be worth it depending on how you look at it. The Stippled Grip Tape and 5mW Laser both provide the buffs to your sprint to fire speed, while the Commando barrel and No Stock gives you extra movement speed. For this build, you’ll be maximizing movement speed and sprint to fire speed.